Underdog is a cartoon character.
IggY!
· Underdog
ArthurAquamanAstro BoyAtom
Ursula
Jughead, Jane Jetson, The Joker and Jerry (Tom & Jerry) are cartoon/comic book characters. They begin with the letter J.
Archie Andrews
gilgamesh gretel
fox, ferret
Jiminy Cricket
Itchy, from Itchy and Scratchy (Simpsons)
The Joker in the Batman movie
Lord of the rings - Aragon