Because you like Hades in Hercules
Count Olaf is a traveling actor, except he can't act and his homicidal tendencies make finding work pretty difficult. See them in Lemony Snicket's A Series of Unfortunate Events.
Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.
A scary monster on the outside, James P. Sullivan is really a softie on the inside. See them in Monsters, Inc..
Tiana lives by a simple motto: "Fairy tales can come true. But you gotta make them happen, it all depends on you." See them in The Princess and the Frog.
Experiment 626 was designed for one thing: to destroy everything he touches. See them in Lilo & Stich.
Viking Astrid Hofferson has it all: brains, brawn, and some killer braids. See them in How to Train Your Dragon.
Disgust is a friend who makes sure you stay away from all things gross. See them in Inside Out.
An inter-dimensional demon, Bill Cipher dreams of a more chaotic Gravity Falls. See them in Gravity Falls.
A cruel pirate, Captain Hook still fancies himself a gentleman. See them in Peter Pan.
The fearless bodyguard of Rick Flag, Katana will ruthlessly kill her enemies, trapping their souls in her sword. See them in DC Extended Universe.