Because you like Nezuko Kamado in Demon Slayer

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

A ball of cheerful energy, Pinkie Pie is as sweet as her name suggests and lives to bring others joy with laughter and parties. See them in My Little Pony.

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

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

Raphael is a short-fused hothead who loves a good fight and some tasty pizza. See them in Teenage Mutant Ninja Turtles.

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

It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.

An inquisitive archaeologist, Professor Hershel Layton knows a gentleman leaves no puzzle unsolved. See them in Professor Layton.

An assassin with supernatural gifts, Corvo Attano is the last guy you should frame for murder. See them in Dishonored.

Edward Elric has a quick mind along with a quick temper. See them in Fullmetal Alchemist.

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.