Bart Simpson

Bartholomew'  JoJo "Bart" Simpson (born April 1/February 23), also known as " '  El Barto," "The boy" (Homer Simpson), and "Bartman," (voiced by Nancy Cartwright) is the tritagonist of The Simpsons. He is the mischievous, rebellious, misunderstood and "potentially dangerous" eldest child of Homer and Marge Simpson, and the older brother of Lisa and Maggie. He also has been nicknamed Cosmo, after discovering a comet in "Bart's Comet". Bart's also been on the cover on numerous comics, such as "Critical Hit", "Simpsons Treasure Trove #11" and "Winter Wingding". Bart also has a whole comic series known as the Simpson Comics Presents Bart Simpson. Bart is loosely based on Matt Groening and his older brother, Mark.