Because you like Utena Tenjou in Revolutionary Girl Utena
Joe West is overprotective and secretive when his children are involved. See them in DC Extended Universe.
Though Twilight might be opposed to it, her new friends might just be able to teach this serious-minded pony how to relax. See them in My Little Pony.
Jessica Rabbit isn't bad. She's just drawn that way. See them in Who Framed Roger Rabbit.
Milo Thatch is an enthusiastic researcher without cynicism. See them in Atlantis: The Lost Empire.
Mikasa Ackerman is a near-perfect soldier who won't break her stone-faced expression whether she's killing foes or protecting loved ones. See them in Attack on Titan.
Morticia Addams hates anything bright and cheery and loves all things ghoulish, ghastly, and violent. See them in The Addams Family.
If Lisbeth Salander can hurt a bastard who deserves it by digging up stuff about him, she feels good. See them in The Girl with the Dragon Tattoo.
A lone wolf with a confrontational streak, Bigby wants to dedicate his life to doing good. See them in The Wolf Among Us.
Wheatley's got an endless supply of bad ideas that he wants to share. See them in Portal Series.
Olive Hoover is an irrepressible child beauty queen (or would-be queen) who doesn't play by your rules. See them in Little Miss Sunshine.