Dexter is good kitty.
He just want to make bad man who hurt master die.
Is that so bad?
(Dexter was a cat, on Earth, owned by a woman in some big city (Star City, Coast City, Metropolis, Gotham?) One day, a man broke into the woman's apartment and killed her. The cat was then taken by some teenagers, stuffed in a bag, and thrown off a bridge. His rage attracted a red ring that bonded itself to him. There were no survivors. Dexter is good kitty.