Because you like Winn Schott in Supergirl
Kilgrave is a domineering, abusive boyfriend. Then, add in the power of mind control. See them in Marvel Cinematic Universe.
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.
You won't like him when Bruce Banner is angry. See them in Marvel Cinematic Universe.
For Wreck It Ralph, it's not easy being the bad guy. Especially when you've been designed to destroy but really desire love. See them in Wreck-It Ralph.
Though he may be blind, Chirrut Imwe sees the power of the force more than most. See them in Rogue One.
Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.
Chuckie Finster is a baby afraid of everything from clowns to closets, unless his best friend's by his side. See them in Rugrats.
A brilliant graduate student in Italy for "research," Oliver has other things on his mind: flirting, swimming, and dancing. See them in Call Me by Your Name.
Driven yet empathetic, Emily Prentiss brings humanity to the pursuit of inhuman killers. See them in Criminal Minds.
Everything is fascinating to Octavia Blake who has been locked away for her entire life. See them in The 100.
This bite-sized, power-hungry plankton is determined to uncover the secret recipe for the Krusty Krab burger. See them in SpongeBob SquarePants.