What cartoon character's name starts with the letter J?

Jinx the Cat

Jinx the Cat. His co-stars were Pixie and Dixie (mice)
You might be able to count the Jailbird (early name of Snake) on the Simpsons. Also, the old guy Jasper.
Johnny Bravo
Jonny Quest
Johnny Test
Jerry (Tom and Jerry)
Josie (Josie and the Pussycats)
Joey Wheeler (Yu-Gi-Oh)
Jimmy Neutron
Jake Long (American Dragon)