Alvin and the Chipmunks are cartoon characters. They begin with the letter A.
Marge and Maggie out of 'The Simpsons' begin with the letter "M"...
Yogi Bear and Yosemite Sam are cartoon characters. They begin with the letter Y
If you are referring to the cartoon characters from the Simpsons, the answer is Itchy, the cartoon mouse.
Fairly OddParents
Zelda
Underdog
Violet Gray is a character in the comic strip Peanuts. Her name begins with the letter V.
Alvin
* Naruto
Krazy Kat
Elmur Fudd.
Underdog