Because you like Roger in American Dad!

Donna Pinciotti is strong, independent, and empathetic. No one messes with her. See them in That '70s Show.

A born psychopath, don't expect Michael Myers to understand the difference between right and wrong. See them in Halloween.

Helena is a mentally unstable, childish, and completely merciless. And most of all, she's an unstoppable killer. See them in Orphan Black.

Butters Stotch is a kind-hearted student who likes ladybugs, Charlie's Angels, art class, baby-back ribs, and Little Bunny Foo Foo. See them in South Park.

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.

Knuckles the Echidna is a 16-year-old red echidna (aka a spiny anteater) and guardian of the ancient Master Emerald. See them in Sonic the Hedgehog.

Experiment 626 was designed for one thing: to destroy everything he touches. See them in Lilo & Stich.

Disgust is a friend who makes sure you stay away from all things gross. See them in Inside Out.

Reckless, vulgar, loud-mouthed: that's what makes Amethyst so awesome. See them in Steven Universe.

Mother Gothel is a great mother as long as you never, ever, break the rules. See them in Tangled.

The biggest nerd in high school, Bill Haverchuck is the biggest target for bullies. See them in Freaks and Geeks.