Because you like Mako Mankanshoku in Kill la Kill
A few millennia in the mortal realm have caused DEATH to be quite enamored of life. See them in Discworld.
Rogue's touch is literally deadly, and she's trying to learn from the older mutants how to manager her powers. See them in X-Men Series.
Leone Montana is a fearless hitman with a surprisingly sensitive side. See them in Leon: The Professional.
Growing up is hard for Carl Grimes. Growing up in a zombie apocalypse is even harder. See them in The Walking Dead.
Evan is a sensible kid, but being sensible isn't going to help him lose his virginity. See them in Superbad.
A grumpy tourist trap owner, Grunkle Stan has a few deep secrets. See them in Gravity Falls.
Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.
Klaus Baudelaire's photographic memory saves the lives of his siblings many times over. See them in Lemony Snicket's A Series of Unfortunate Events.
Daria Morgendorffer is so defensive that she actively works to make people dislike her so that she don't feel bad when they do. See them in Daria.
Dewey Finn will rock you. He feels rock and roll in his blood and guts. See them in School of Rock.
Donkey Kong is a strong, banana-loving, and caring uncle to Diddy Kong. See them in Donkey Kong.