Castor Oyl

Castor Oyl is a cartoon character, created in 1919 by cartoonist Elzie Crisler Segar for his comic strip Thimble Theater, now known as Popeye.

Castor Oyl is Olive Oyl's brother. He was the main protagonist of Thimble Theater for years before the first appearance of the Popeye character in January 1929. A quick-witted yet diminutive adventurer, Castor Oyl continued to be an important character in Segar's Popeye strip, but played little (most usually no) role in the Popeye theatrical cartoons produced first by Fleischer Studios and then by Famous Studios. His most prominent appearance in the series is as a member of Popeye's orchestra in the 1935 short The Spinach Overture.

Castor Oyl is named after castor oil, a medicine often given to children back in the 1920s and 1930s.