List of secondary characters in American Dragon: Jake Long
This is a list of secondary characters in the American animated television series American Dragon: Jake Long.
Allies
Family
- Haley Kay Long (Amy Bruckner): Jake's intelligent, goody-two-shoes little 8-year-old sister; Like Jake, Haley also has dragon powers, although hers are not fully developed yet. She takes pride in exposing Jake's mischievous behavior to their parents, as well as showing off her own "superior" talents. Normally the audience only sees little parts of her dragon form, such as her wings and tail. In "Family Business", her full dragon form is revealed, and she begins her own dragon training under Sun Park's guidance. She has taken many aspects of her training with Sun to be applied in her daily life, which puts her at odds when paired with more "average" kids her age. She also seems to take pleasure in making her brother look bad as a dragon. However, she is starting to show more respect towards Jake. It is revealed in "Haley Gone Wild" that she has never gotten in trouble (until the end of the episode) and she says doing something bad is against her nature. She is present in "Homecoming", when Rose betrays her brother before destroying the Huntsclan. She witnessed Jake trying to save her before he destroyed all of the skulls in a furious rage. She also takes part in the final battle with the Dark Dragon rescuing her grandfather, re-capturing Councilor Chang and witnessing Rose's return to help as well as the Dark Dragon being trapped for a thousand years in another dimension. According to producers Matt Negrete and Eddie Guzelian, Haley was named after Eminem's young daughter, Hailie, due to the creator being a big fan of the rapper. It's also revealed that she was named after Haley's Comet, her mother loved the name "Haley" when she was dating her father.
- Jonathan Long (Jeff Bennett) Jake's dad. He is a normal human being who doesn't have the slightest clue about his family's magical background. In "Hero of the Hourglass", Jake goes back to 1986 and reveals his family's secret to his dad. When he found out at first he was frightened but demonstrated nobility when he refused to reveal Susan's idendity to the Huntsclan. However, Jonathan was told it was all a dream and still does not know about the existence of magical creatures. According to Lao Shi, Jonathon, although a bit odd, is a role model the Dragon Council feels Jake should follow because he is kind, honest and courageous. He proves this in "Bite Father, Bite Son" where after Jake is hurt he attacks the Strigoi. He is unable to defeat them but he distracts them long enough for Jake to destroy them. In "Hong Kong Longs", he discovers the existence of magical creatures and learns the secret about his family (he accidently walks in on Haley dragoned up and everyone's forced to explain the truth to him) and accepts it helping Jake defeat the Shades during his battle with the Dark Dragon by discovering their weakness: light and using it to destroy them all in one go. Jake later asks him why he's so okay with all of this and he admits that he always thought that their was something magical about his family. He also showed how couragus he was by rushing into battle to help Jake when he found out he was in trouble although he'd only just learned the family secret and was still trying to process that.
- Susan Long (Lauren Tom) Jake's mom. Though descended from a (supposedly) pure dragon bloodline, she does not possess dragon powers herself, as they sometimes skip generations (as she mentions in "Shapeshifter"). She runs her own catering service, that has sometimes been known to provide for premiere events, such as the wedding of (fictional) soap opera stars Thad Rochefort-Chaise and Jasma Sancere in "Jake Takes the Cake". She has been reluctant in revealing the family's secret to Jonathan and fears of how he will react (see "Hero of the Hourglass"). She's forced to in The Hong Kong Longs after Johnathon accidently walks in on Haley dragoned up and not only does he take it well he wants to help Jake immediatly after discovering he's in trouble. Susan takes part in the final battle with the Dark Dragon the first and only time in the series she fights in a battle (Jake's father fought the Strigoi) and she destroys some of the Shade Demons with a camera.
Other Family Members
- Aunt Cathy (Amy Hill): Susan's sister and Greggy's mom. She seems to have an ongoing competition with her sister. So, she tends to subscribe to the illusion that Greggy's dragon powers are superior to Jake's and presents herself as completely unimpressed by Jake's skill.
- Aunt Mai : She is one of Jake's relatives. In Feeding Frenzy, she was going to let Jake play with her teeth.
- Aunt Patchouli Long (Wendie Malick): Jonathan's sister. Like her brother, she is unaware that her sister-in-law and niece and nephew are from a long line of dragons. She is also unaware that her longtime love-interest Stan is actually a troll despite having known him from college.
- Gregory, aka Greggy (Will Friedle): Jake's annoying cousin. Appears in "Feeding Frenzy", where it's shown that he has recently developed his own dragon powers, yet has much less skill in using them compared to Jake (admittedly, he is one year younger than Jake, so he is inexperienced). Despite that he is younger than Jake, he acts like he is older and believes that his dragon skills are far more superior. Although, it is shown that he is very immature, battles included, and Jake is far more skilled.
Magical Allies
Recurring Characters
- Bertha (Edie McClurg): The dim-witted giantess (with a persistent foot-odor problem) who first appeared in "Eye of the Beholder" as a beauty pageant contestant. Later appeared in "The Hunted", as one of the captured magical creatures that Jake met. She also had a cameo in "Family Business".
- Brocamas (Dee Bradley Baker): The leprechaun proprietor of "Pot O' Gold Import-Export". He hired Jake as personal protection (with a large salary of leprechaun gold) in "Fool's Gold". He unknowingly sold an Aztec crystal skull to the Huntsman (which Jake just as unknowingly delivered to him), but immediately started to help Jake when he discovered the truth. He appears once more in "Switcharoo" in which Haley and Jake switch bodies.
- Sara & Kara (Tara Strong): Twin oracle sisters who are descendants of the Oracle of Delphi. All of their visions of the future are 100% accurate, although they are not able to control when or where they have predictions, nor are they able to specifically choose what or where they predict. Sara is always chipper, optimistic, and constantly happy, yet only receives visions of bad things to come. Kara is always more gloomy and pessimistic, yet only receives visions of good things to come. The discrepancy is explained in "Body Guard Duty"; because Sara only sees bad, even the smallest good news can make her incredibly happy; whereas Kara sees only good things, so all the pleasant surprises and joys of life are ruined. In Season 1, both Sara and Kara were redheads. In Season 2, Sara is a blonde and Kara has jet-black hair.
- Silver (Kari Wahlgren): An intelligent mermaid (graduated "aqua cum laude" at Atlantis U.) with aquaphobia. First appeared in "The Hunted", as one of the captured magical creatures that Jake met. Though overcoming her fear of water for that moment, she still has occasional re-lapses. She currently dwells in the East River mermaid city of Mermopolis, working in the "Mermaid/Dry-Lander Relations" department (see "Something Fishy This Way Comes"). In Season 1, Silver was a brunette and wore a pink t-shirt. In Season 2, Silver's hair is a silver-light blue and wears an aquamarine tank top with a matching headband and necklace.
- Shark Lady (Kari Wahlgren): A shark-woman who resides in the ocean near Florida. She helped Jake in trying to thwart Tiburón's plan in flooding the North American continent in "Feeding Frenzy". She was also one of the blind dates set up with Lao Shi in "Something Fishy this way Comes". She also has a cameo appearance in "Nobody's Fu", in which she is at a card game where Fu is playing instead of helping Jake.
- Stan Lipkowski (Don Lake): A one-eyed troll that lives under the sewers of New York City. First appeared in "Old-School Training" as an old friend of Fu Dog. It's revealed later in "Adventures in Troll-Sitting" that he attended NYU in the 80's, where he met Jake's Aunt Patchouli. He made a guest appearance in "Halloween Bash", attending Jake's Halloween party.
- The Tooth Fairy (Edie McClurg): The well-mannered fairy who collects children's teeth and grants them money in return. First appeared in "The Legend of Dragon Tooth", and later appeared as a Beauty Contest judge in "Eye of the Beholder". Also appeared at the end of "Hong Kong Nights" as one of Jake's "warriors" to help fight the Dark Dragon.
- Veronica (Tara Strong): An arachne who works in the Magus Bazaar. She's also a love interest of Fu Dog's. She helped Jake fight the Dark Dragon in "Hong Kong Nights".
Other Magical Allies
- Clooney: A neurotic leprechaun with persistent bad luck. He constantly tosses a gold coin, trying to guess what side will land, but is wrong every single time. Appeared in "The Hunted".
- Councilor Andam (Clarence Williams III): He is the Dragon of Africa and one of the members of The Dragon Council. He administrates the "Test of Wisdom in Battle".
- Councilor Kulde (Jeff Bennett): He is the Dragon of Europe and one of the members of The Dragon Council. He administrates the "Test of Judgement in Fire".
- Councilor Kukulkhan: He is the Dragon of Central America and one of the members of The Dragon Council.
- Councilor Omina: She is the Dragon of Atlantis and one of the members of The Dragon Council.
- Cupid (Nestor Carbonell)
- Fred Nerk (Adam Wylie): The first dragon protector of Australia, whose premiere fame was quickly shut down upon Jake Long becoming the first American Dragon. In "Dragon Summit", he showcased his competitive nature in a "prank battle" with Jake, and also during a race against him around the Isle of Draco for Jake's "Courage in Flight" Dragon Test. After being rescued by Jake from the unexpected interference of the Dark Dragon (at the cost of him losing the race), Fred ultimately came to respect Jake and treat him as a friend.
- Hobie (Daryl Sabara): An eight-year-old, 400-pound giant who is a big fan of the King Extreme Wrestling League (K.E.W.L.). In "Ring Around The Dragon" (his only appearance), he ran away from his village to become a professional in the league, under the care of King Hammer. He had a dislike for his parents' protectiveness (shown by them sending Jake coming to try and bring him home), but then thought otherwise after stopping Hammer from kidnapping the population of his village to fill the roster of his wrestling league.
- Inga, Sven, and Uta: Elves who work as caterers for Susan Long's catering company (see "Jake Takes the Cake"), which serves both magical and non-magical creatures alike.
- Jasmine (Lacey Chabert): A teenage girl who is also a nix. In "Dragon Breath", Jake brought her to his school dance as his date (after Brad already took Rose), unaware of her warnings that she had to be home at an exact time (the point when the moon reaches the exact center of the sky). Jake ignored her warnings, and she transformed into her monstrous shape, nearly stealing all the souls of the students at the dance until Jake managed to stop her.
- Marty (Ron Masak): The (current) Grim Reaper. He appears in the episode "Family Business". He is an old friend of Fu's (and notorious for playing practical jokes) and throughout the episode, they have a prank battle. Fu wins by paying brownies to dress up as another Grim Reaper causing Marty to pass out on the floor. It's revealed that Marty wasn't always the Grim Reaper (he had to best the former Reaper to claim the position), and had several "dead-end" (pun intended) jobs, such as a grocery-store cashier, a cruise director, and a fitness instructor.
- Pix McGee (Mindy Sterling): Jake's personal magical assistant (PMA). Appeared in "The Doppelganger Gang".
- Reggie: A brownie with anger-management problems (though he claims that he manages to get angry just fine). Appeared in "The Hunted".
- Sam Spark (James Arnold Taylor): A pixie photographer for the popular magical magazine, Magicweek. Appeared in "Family Business".
Students and faculty of Millard Fillmore Middle School
Recurring Characters
- Brad Morton (Matt Nolan): One of the premiere football players at Millard Fillmore Middle School, where he plays the role of the "dumb jock". He is very egotistical, constantly referring to himself as "The Bradster". In Season 1, he was a major foil to Jake getting a chance to spend time with Rose during school. It seems that Brad hides his fears and embarrassing secrets like his fear of the dark (see "The Doppelganger Gang") and dreaming of becoming a ballerina (see "Dreamscape") with his tough-guy attitude. As shown in "Bite Father, Bite Son", his father is a cop and, much like his son, picks on other people.
- Principal Dolores Derceto (Susan Blakeslee): The former principal of Millard Fillmore Middle School. In Season 2, it is revealed that she is actually an undercover mermaid detective who was sent to investigate the whereabouts of the Kelpie after its escape from Mermopolis in "Something Fishy This Way Comes". She also had a short relationship with Lao Shi, though after the Kelpie was apprehended, she was forced to relocate and take a new undercover assignment elsewhere, forcing her to end the courtship. She reappeared for a short time in "Furious Jealousy" to inform Jake that Fury had been released from stone.
- Professor Hans Rotwood (Paul Rugg): Jake's harsh and slightly deranged schoolteacher, and the main nemesis in Jake's "normal" life. He has an obsessive interest in magical creatures, with his ultimate goal being to find and capture a magical creature to prove once and for all that they exist. This obsession caused him to lose an earlier job at a prestigious University, explaining his insistence that students and others refer to him as "Professor Rotwood" rather than "Mr. Rotwood." Although Rotwood has shown an extensive knowledge of the magical world (having shown reasonably accurate knowledge of subjects such as Taranushi's Chalice, dream charms, and Sasquatchs), he is prone to frequent, major inaccuracies (such as his initial belief that dragons have pea-sized brains and smell vaguely of lavender) which often thwart his attempts to expose magic to the human world. He has, nonetheless, come to suspect that Jake may, in fact, be a dragon in human form. In "Something Fishy This Way Comes", Rotwood becomes the new principal of Millard Fillmore Middle School, after Principal Derceto "unexpectedly departed". In the Rotwood Files, Rotwood finally confirms that Jake is a dragon and vows to expose Jake's secret to the world. In Magical Enemy #1 he exposes Jake's secret to the school through his permanent records and creates a Freak of the Year category. He has Jake nominated for it in an attempt to anger him enough to dragon up and allow Rotwood to get his much needed evidence. In addition, he reveals some of his motives to Jake such as the belief that by exposing magical creatures, it will allow for them to exist in harmony with humans.
- Stacey Wintergrin (Tara Strong): One of the three co-captains of Millard Fillmore Middle School's cheerleading squad. Though very stuck-up and snobby to many people outside of her popular clique, Spud has become obsessed with trying to win her heart. Despite his affection, Stacey quickly runs, screaming in horror, at any physical contact (or even friendly greetings) made by him. However, in "Furious Jealousy", Spud falls for one of Fury's lies when she tells him that she wants to use her power to do good for the world, but in order to do so, she needs a bracelet that will restore her powers. Afterwards she apparently uses mind control to make Stacy like Spud (she begins to secretly see him while in public pretending she still hates him). Spud soon realizes that Fury just used him to free her sisters and to permanently imprison Jake in stone and drop him in the Hudson River, and he helps save the day. Back at school, Spud tries to tell Stacey that it's okay if she dumps him for Nigel Thrall, but she tells him that she likes him because he came up with an idea for a dance to please her and together, they share a dance in the janitor's closet. Presumably they continue to date in secret after this now that Spud has finally won her over by himself. In "Being Human" she appears and considering the fact that she's Spud's graduation partner, they are still dating and their relationship may be more public as she clearly agreed to be his partner.
- Sun Park (Sandra Oh): She is Jake, Spud, and Trixie's home economics teacher. It was revealed in "Family Business" that she is actually the Korean dragon, and took up the duty of training Jake's little sister Haley. One thing she doesn't like is Jake pulling bad pranks on Haley (no matter how much she deserves it). Jake asked for her help when a Pooka was controlling Haley and other children. According to Eddie Guzelian and Matt Negrete, Sun was supposed to have a fight on top of a volcano with Rose in "Homecoming", which would have resulted in her death at Rose's hands. Instead, she was present when the Huntsclan was destroyed by Rose and Jake made his wish to save her life before he destroyed all the skulls. She later appears again in "Being Human" where she fights Chang. In "The Hong Kong Longs", she fights in the final battle with the Dark Dragon, Chang, and Bananas B. She helps Haley defeat Chang by tossing a sphinx-hair net on her that had been used to contain Gramps.
Other Students and Faculty
- Courtney: Rose's best friend and one of the tallest girls in school.
- Danika Honeycut (Jessica Di Cicco): A girl who Jake developed a crush on in "Siren Says". Trixie, Spud and Fu were convinced that she was a siren who was bent on destroying Jake. In the end, Trixie showed Jake that she was wearing a necklace that contained siren powers and Jake started to think that she was a siren, Danika said that the real siren had given it to her and she angrily told Jake off for accusing her of being a thief. Jake realized she wasn't a siren, but it was too late to save their relationship. In "Being Human", she has forgiven Jake for what happened, and appears to still have some apparent interest in dating him again as she agrees to be his graduation partner.
- Kyle Wilkins: A boy at Millard Fillmore Middle School whom Trixie is completely obsessed with. His brother appeared in "Haley Gone Wild". He may return some of Trixie's feelings as he is shown to be her graduation partner.
- Lacey (Kay Panabaker): One of the three co-captains of Millard Fillmore Middle School's cheerleading squad.
- Nigel Thrall (Adam Wylie): The new British exchange student at Millard Fillmore Middle School. First introduced in "Supernatural Tuesday" as a rival to Jake in all of his skills (skateboarding, freestyle rap, etc). In a twist that makes him even more similar to Jake, he's actually a young wizard apprentice who was transferred to New York City as a means to complete his magical training. He is set to have a relationship with Stacey in "Furious Jealousy" but she breaks up with him and starts secretly dating Spud. He helps battle the Gorgon sisters and turns the tide of the battle by teleporting a pair of googles onto Jake which deflects the Gorgons' attack back at them re-imprisoning in stone Eurayle and Medusa (but Fury gets away again). Spud agrees to break it off with Stacy and allow her to go back to him (they believed that she was under Fury's mind control) but it turns out that she really did like Spud and wasn't being controlled at all so he didn't end up getting her back.
- Tracey (Brenda Song): One of the three co-captains of Millard Fillmore Middle School's cheerleading squad.
Villains
Recurring Villains
- Bananas B (Adam Wylie): Banana's is a talking monkey who has a very hip-hop and arrogant persona and became Jake's replacement Animal Guardian after Fu got suspended. However, things took a turn for the worst when Chang escaped prison in an attempt to slay Jake. Fearing for his life, Banana's joined her and assisted her in her attempt to slay Jake. He reappears in "Being Human" and "The Hong Kong Longs", further assisting Chang in her villainy. During the final battle in "Hong Kong Longs", he decides to leave when the Dark Dragon starts to lose, only to be chased away by Fu Dog.
- Chick Boomgarden: Another person who is not truly evil, but is the owner of "Boomgarden Electronics", which has been a tough competitor for Lao Shi's Canal Street Electronics. Introduced in "Supernatural Tuesday".
- Councilor Chang (Lauren Tom): A former member of the Dragon Council (as the Dragon of Asia). She was very intolerant of Jake's irresponsible behavior as a dragon, and relished in any moment to try and expel him from his duties. It was revealed in "Dragon Summit" (and to the characters of the show in "Hong Kong Nights") that she was working with the Dark Dragon to help his plan of overthrowing the human dominance of the world, restoring power to magical creatures. At the end of "Hong Kong Knights", she is incarcerated for her crimes against the Dragon Council. However, in "Nobody's Fu", it is discovered that she has broken out of prison in an attempt to get revenge on Jake and Lao-Shi. In "Being Human", she along with Bananas B attempted to cast a spell to restore the Dark Dragon to power. Though they were defeated and trapped in a cave, the spell was completed and the Dark Dragon returned. In "Hong Kong Longs", Chang assisted the Dark Dragon in fighting the dragons, only to be trapped in a spinx hair net by Haley and Sun and falls down the mountainside.
- The Dark Dragon (Clancy Brown): The Dark Dragon is the #1 threat to the magical community; the strongest of the many opponents of the protective dragons, including Jake's grandpa. His goal is to assemble an army of evil magical creatures to destroy humanity and take over the Earth. His 'human form' (if there is one) has yet to be shown. He can conjure dragon-like shadow creatures called Shades to serve as his minions. He seems to have an interest in Jake, and offered Jake a chance to join him during their first meeting. In "Hong Kong Knights", the Dark Dragon is defeated by Jake and his friends and seems to be destroyed, but through the use of a spell, he is brought back to power and returns at the end of "Being Human". In "The Hong Kong Longs", it is revealed that Chang not only resurrected him but she imbued him with many dark powers. After the battle that had taken hold, Chang and Bananas B are defeated along with the Shade Demons who are destroyed by Johnathan Long. However, the Dark Dragon has yet to be matched until Rose returns to help Jake and fights him. The temple they are in starts to begin its disappearance for another 1,000 years. Everyone leaves but Rose is still trapped within. Jake immediately goes to rescue Rose but starts to be pulled into the portal with the Dark Dragon until Rose cuts off the tip of his tail giving her and Jake the chance to escape. The Dark Dragon is then pulled into another dimension for another 1,000 years. His appearance in Season 1 contrasts his appearance in Season 2. In Season 1, he appeared as a larger, black and purple-colored version of Jake, while his Season 2 appearance is more unique and is black and blue in coloring. This is commented on and is explained away by Chang as the fact that she imbued him with incredible dark powers when she resurrected him.
- Eli E. Pandarus (Jonathan Freeman): Pandarus is a rich and famous hotel owner, who in reality is a dark wizard who uses his magic to control Wall Street, with his ultimate goal being to take over the world. He greatly resembles multi-billionaire Donald Trump. He is also a descendant of Pandora. First appeared in "The Heist", where he had stolen a large collection of leprechaun gold. Later appeared in "Eye of the Beholder", where he sponsored a beauty pageant on his private island to execute a plot to grant him great power. He once again returns in "A Befuddled Mind" where he plans to open Pandora's Box to take over the world. In Season 2, Pandarus appears more ruthless and hands-on in his villainy.
- Fury, Euryale (Hynden Walch), and Medusa: Three Gorgon sisters who terrorized Ancient Greece. Their ability to turn people to stone was used against them by a Greek warrior using a reflective shield and their statued forms were scattered until an accident in the museum freed Fury. Alone, Fury has the power to hypnotize whomever she chooses, but when all three are together, they can turn anyone into stone. First appeared in "Bring It On". They are currently imprisoned in stone at the bottom of the Hudson River. Fury returns in "Furious Jealousy" when a ship anchor destroys her stone prison. She then tricks Spud to give her a bracelet that will help her free her sisters so they can trap Jake in the same stone prison and drop him in the Hudson River, just like they were. In the end, Medusa and Euryale are freed and Spud realizes he was tricked. With Nigel's help, they save Jake who uses glasses to use their powers against themselves. Medusa and Euryale are once again imprisoned in stone and fall into the river, but a terrified Fury flees after Jake decides to let her go and get her another day.
- Herbert the Goblin (John DiMaggio): The Goblin crime boss of New York. First appeared in "Dragon Breath", hustling Fu Dog about his massive gambling debts that he owes to him. He later appeared in "Body Guard Duty", where he tried to kidnap the Oracle Twins to help him land big bets for the Ogre Bowl.
- Huntsboy #88 (Kyle Massey): He is one of the Huntsman's two new teenage apprentices. He has a very hip-hop and arrogant persona (ironically similar to Jake), and constantly argues with #89. Both he and #89 believe that they are truly some of the greatest dragon slayers in the Huntsclan. In reality, they are cowards who show fear in the presence of real dragons such as Jake and Lao Shi. He and #89 have witnessed that Rose/Huntsgirl may actually be working with the American Dragon (who they don't know is Jake). He and #89 are the only known members in the Huntsclan left alive after Rose's wish in "Homecoming".
- Huntsboy #89 (Nicholas Brendon): The Huntsman's other new apprentice. He acts very foolish and cowardly (especially in Huntsclan duties), and constantly argues with #88. Both he and #88 believe that they are truly some of the greatest dragon slayers in the Huntsclan. In reality, they are cowards and show fear in the presence of real dragons such as Jake and Lao Shi. He also seems to like taunting Rose about the fact that she may be working with the American Dragon. He and #88 are the only known members of the Huntsclan left alive after Rose's wish in "Homecoming".
- Huntsclan: The Huntsclan is a tribe/military group of dragon slayers and warriors that exploit magical creatures for profit and power. They are the sworn enemies of dragons and are lead by the Huntsman. The main story arc of Season 2 revolves around the Huntsclan's scheme to gather 13 mystical Aztec Skulls and use their power to kill every magical creature on the planet. In "Homecoming", one of the series' final episodes, Rose turns the power of the Aztec Skulls against the Huntsclan, killing the Huntsman and all other Huntsclan members (with the exception of Rose, #88, and #89).
- Olivia Meers (Liliana Mumy): Not really a villain, but she is Haley's school rival. She is the owner of Yan Yan, but unlike Haley, is unaware of her pet's magical descent. First appeared in "Fu and Tell". She once again returns in "Switcheroo" where she continues to bully Haley.
Single-Episode Villains
- Big Mamma: The biker trolls' mother and leader. Appeared in "Keeping Shop".
- Biker Trolls: A gang of motorcycling mountain trolls that occasionally leave their mountainous home to cause trouble. Despite their thuggish attitude, they are also sensitive deep down inside and are referred to as "Mama's Boys" by Fu. Seen in "Keeping Shop".
- Dr. Diente (John C. McGinley): Diente is the Tooth Fairy's assistant. In "The Legend of Dragon Tooth", he betrayed her and wanted to get his hands on Haley's dragon tooth to unleash an unspeakable evil: by becoming a giant monster made of teeth! This character is currently deceased after the battle with Jake (Jake electrocuted him by hitting him with a giant TV screen and after he was electrocuted, viewers notice Diente's broken glasses lying on the ground). His last name, fittingly, means tooth in Spanish.
- King Hammer (Jeff Bennett): The evil manager and founder of "K.E.W.L." (King Extreme Wrestling League) in "Ring Around the Dragon". Coaxed the child-giant Hobie into competing as one of his premiere wrestlers, and later tried to kidnap and force the population of giants in Hobie's village into participating in his wrestling league. His plan was foiled by Jake and Hobie in the end. He is last seen being chained up with his wrestlers, it is unknown what happened to him after that.
- Maximinus (Dee Bradley Baker) An ogre gladiator in Ancient Rome who used the Helmet of Truth to defeat his opponents by reading their every thought and knowing their next move. He became a formidable warrior and had sacked half of the Roman Empire. As a result, his helmet was confiscated by The Dragon Council. In "Supernatural Tuesday", he returned to reclaim what was taken from him. He was later defeated by Nigel and Jake.
- Monty Hall (himself): Appeared in "Eye of the Beholder", where he acted as the host of the beauty pageant, and as an associate in Pandarus's evil plan (hoping to become the "World's Most Powerful Game-Show Host"). It is revealed in "A Befuddled Mind" that after the events in "Eye of the Beholder", he has been fired by Pandarus.
- Mrs. Grumplestock (Mindy Sterling) An instructor at the Manhattan Genius Institute. Appeared in "A Befuddled Mind" where she was an associate in Pandarus' plan.
- Octopuss: A new creature who first appears in "The Academy" when Spud hacks into the mainframe of the Huntsclan, inadvertently bringing Octopuss to the teleportation setup. However, no name was revealed.
- Ophelia Ogelvy (Diane Delano): A dogcatcher that planned to create an emulsion from the essence of every breed of dog to help her cure her allergies until she was foiled by Fu Dog, Jake, and Lao Shi (see "Fu Dog Takes a Walk").
- Pooka Pooka (Dee Bradley Baker): An evil creature disguised as a puppet on Pooka Pooka Fun-Fun Farm. He appears in "Haley Gone Wild" where he hypnotizes Haley, as well as other children, to perform various misdeeds. He is later defeated by Haley when she returns back to her "goody two shoes" self. Besides that the show was cancelled, it is unknown to what happened to him.
- Queen Liliana (Tress Macneille}: A strigoi who appeared in "Bite Father, Bite Son." Coming to old age, she gets her sons to find the American Dragon so she can suck his blood. Unfortunately, her sons think it's Jake's father Jonathan instead of Jake. Jake attempts to fight the strigoi, but they use sphinx hair on him and leave Jake unconscious in the hallway. Jonathan is infuriated when he finds his son injured in the hallway and attempts to them, but they get the better of him and prepare to have there Queen feed on his blood. Luckily, Jonathan's distraction gave Jake some time to put instant sunshine in a coffee blender, heating it up and making Liliana and her sons disintegrate into the air.
- Shackles Jack (Dee Bradley Baker): A ghost in "A Ghost Story". He was a prisoner of war and when he died, he vowed that he would return when all the planets aligned. Only then he would able to get a hold of a trophy in which he could use to take a hold of the living. In the end, Jake is able to trap Jack and all his ghost companions in the trophy and seals it, trapping them forever.
- Sigmund Brock (Corey Burton): The one-time principal of Millard Fillmore Middle School, and Rotwood's former mentor. He had planned to expose one of the students at Millard Fillmore Middle School as a dragon, but his plan quickly backfired when he had used his potion "Brockium" on the wrong student. He was immediately fired from his job and arrested for endangering the lives of the students.
- Tiburón (John DiMaggio): A shark-man whose goal was to use Neptune's Trident to flood half of North America so that he may become the ruler over that large area of land (see "Feeding Frenzy"). He is currently incarcerated in Shark Prison. His name, as it would suggest, means shark in Spanish.
- Vicky: A computer geek girl who is actually a siren. She had a crush on Jake and wanted him to go out with her, but when Jake denied her, she angrily used her powers on Jake, Spud and Fu and ordered them to destroy each other. She clearly had the advantage until Trixie knocked her unconscious with a shield. First appeared in "Siren Says". She was mentioned in "Being Human" in the school yearbook
- Yang Jake (Dante Basco): In "The Doppelganger Gang", Jake inadvertently used a negative ch'i amplifier (in an attempt to create a doppelganger to fight Brad) that caused Yang Jake to be created. The evil doppelganger eventually goes on to absorb the other Jake doppelgangers in an attempt to overpower the real Jake. In the end, Jake reabsorbs Yang Jake as negative ch'i, possibly destroying him. It is not known if Yang Jake will make any future reappearances. Although called Yang Jake, he is never referred to Yang Jake in the episode. Instead, Jake calls him "Evil Jake".
- Yan Yan (Tia Carrere): A hairless, talking cat that has fought with Fu Dog for hundreds of years over Fu Dog's family amulet, causing tons of disasters in their violent bouts (such as tilting the Leaning Tower of Pisa, or causing the Titanic to collide with an iceberg). First appeared in "Fu and Tell".