Because you like Neelix in Star Trek Voyager

Cinderella will sacrifice herself to keep her family's memory alive. See them in Cinderella (Live Action).

Jack Bauer is a terrorist fighter who is scared of nothing and no one. The clock is ticking! See them in 24.

Born and raised in the darkness, Bane is determined to have the city totally under his control so that he can demolish it. See them in DC Extended Universe.

Wanderer is a Soul, a parasite sent into a host to take over their body, extracting information from them and colonizing their species. See them in The Host.

Hank McCoy is a quintessential nerdy scientist but with a few rather unconventional physical attributes. See them in X-Men Series.

They say they saved Adam Jensen by turning him into a cyborg, but he's not sure saved is the right word. See them in Deus Ex Series.

Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.

Barry Egan has too many anger issues to list here. See them in Punch Drunk Love.

Leatherface's moods change with his masks. See them in The Texas Chainsaw Massacre.

Frederick Frankenstein is an eccentric (O.K., maybe a little insane) professor who is excited to be delving into his family's past. See them in Young Frankenstein.

Stubborn, impulsive, and fun-loving, Hallie Parker is not afraid to devise some schemes to bring her family together. See them in The Parent Trap.

Once a handsome prince, the Beast is now a grumpy, furry, monster. It's hard to pinpoint which mammal he resembles the most. See them in Beauty and the Beast.