Because you like Norah Silverberg in Nick and Norah's Infinite Playlist
A few millennia in the mortal realm have caused DEATH to be quite enamored of life. See them in Discworld.
A superpowered test subject, Scarlet Witch can manipulate other people's thoughts and force them to confront their worst fears. See them in Marvel Cinematic Universe.
Chef is a swinging bachelor and former R&B singer with a leopard-skin upholstered couch and some great stories. See them in South Park.
Jade Jade Harley might not be the best at reading social cues, but her bravery and selflessness means she's a great friend to have. See them in Homestuck.
Eponine is a scrappy street urchin with a bad case of unrequited love. See them in Les Miserables.
Andrew Glouberman is trying to make it through puberty with his sanity intact. See them in Big Mouth.
An ambitious man of science, Norman Osborn has become green with envy over Spider-Man's powers. See them in Marvel Cinematic Universe.
World domination and Superman's demise are next on Lex Luthor's to-do list. See them in DC Extended Universe.
Dr. Gordon Freeman is a brilliant physicist is a quiet hero. And given all the violent aliens, he better be. See them in Half-Life.
Newt Scamander is more comfortable with animals than people, even if the animals are super-dangerous magical creatures. See them in Fantastic Beasts and Where To Find Them.