Because you like David Mills in Se7en

Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.

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.

Benoit Blanc is Sherlock with Southern charm, and a mysterious benefactor. See them in Knives Out.

Talking to a stranger on a train is the best decision Jesse Wallace ever made. See them in Before Sunrise.

Tony Stonem is the golden boy of Bristol. Problem is, he knows it. See them in Skins.

Whether it's a companion he’s failed or lingering guilt from the war, the Doctor can never truly let go of his past lives. See them in Doctor Who.

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.

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.

The witty Aku would be an ideal dinner guest, if he weren't a demon. See them in Samurai Jack.

Extremely violent and loyal, Sandor Clegane is called the Hound for a reason. See them in Game of Thrones.

Protecting his family's name and its power are more important to Tywin Lannister than anything or anyone. See them in Game of Thrones.

Basil Hallward is dominated, soul, brain, and power by Dorian. See them in Dorian Gray.