Because you like Zenitsu Agatsuma in Demon Slayer

An obsessive schoolgirl, Yuno has two sides to her personality, and both are equally unnerving. See them in The Future Diary.

High school is Hell, so Allison Reynolds spends her time giving herself tattoos with ballpoint pens and shaking dandruff out of her hair. See them in The Breakfast Club.

With a unique ability to empathize with killers, Will Graham helps society but his sanity pays the price. See them in Hannibal.

Holly Golightly spends so much time trying to be other people's dream girl, she doesn't really know what kind of girl she actually is. See them in Breakfast at Tiffany's.

Derek Hale is not one to make allies easily. This moody werewolf is dark and brooding. See them in Teen Wolf.

Deadpool thinks life is an endless series of train wrecks with only brief commercial-like breaks of happiness. See them in Deadpool.

Donkey is proof that if you're annoying enough you can change the world; he's the reason that his friend Shrek does, well, anything. See them in Shrek.

An infamous vampire, Alucard is a one-man killing machine with a philosophical side. See them in Hellsing.

The only defense Earth has against alien invaders are giant robots in the hands of pilots like Kaworu. See them in Neon Genesis Evangelion.

Will Herondale is an emotionally distant bad boy with a secret. See them in Clockwork Angel .

Driven, resentful, and ruthless, Mello is an emotional powder keg. It's only a matter of time before he explodes. See them in Death Note.

Morticia Addams hates anything bright and cheery and loves all things ghoulish, ghastly, and violent. See them in The Addams Family.