Itchy[]
Itchy is the cartoon mouse from Itchy & Scratchy. He is a serial killer whose favorite victim is Scratchy. He almost always succeeds in killing Scratchy. There is only one known episode where Scratchy defeats him.
Scratchy[]
Scratchy is a cartoon cat from the show Itchy & Scratchy, an obvious parody of Tom and Jerry. His enemy is Itchy, a blue mouse. In almost every episode, Scratchy is killed, or, at least brutally injured by Itchy.