Because you like Arthur Fonzarelli in Happy Days
Kilgrave is a domineering, abusive boyfriend. Then, add in the power of mind control. See them in Marvel Cinematic Universe.
The Genie is the perfect buddy, granting every wish we might have and keeping life good-spirited. See them in Aladdin.
Gomez Addams fills his days with ghoulish and ghastly forms of recreation, enjoying life and all its pleasures to the fullest. See them in The Addams Family.
Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.
Khan Noonien Singh is super strong, super smart, and out for revenge. He always seems to be two steps ahead of his enemies. See them in Star Trek Into Darkness.
The witty Aku would be an ideal dinner guest, if he weren't a demon. See them in Samurai Jack.
Red doesn't like to explain herself. She wants her work to do the talking. See them in Transistor.
Playing his cards close to his vest, J. Daniel Atlas believes the closer you look, the less you see. See them in Now You See Me.
This lab mouse has one thing on his huge brain: trying to take over the world on a nightly basis. See them in Pinky and the Brain.
A singing nanny, Mary Poppins is practically perfect in every way. See them in Mary Poppins.
This bite-sized, power-hungry plankton is determined to uncover the secret recipe for the Krusty Krab burger. See them in SpongeBob SquarePants.