Because you like Ethan Chandler in Penny Dreadful
Basil Hallward is dominated, soul, brain, and power by Dorian. See them in Dorian Gray.
He may seem like a charismatic leader, but Bellamy also has a ruthless, self-serving streak See them in The 100.
Louise Belcher might be just a kid, but she can manipulate just about anyone with a pulse. All in the name of fun, of course. See them in Bob's Burgers.
Although she is underestimated, Lagertha never fails to prove her worth as both a warrior and a mother. See them in Vikings.
Villanelle is a hired assassin who loves committing murder as much as she loves dressing up in fancy pink ballgowns. See them in Killing Eve.
Handsome Jack is wearing a mask of his own face to hide his scarred real one. See them in Borderlands Series.
An upbeat, fun-loving teen, Sora would do anything for his friends. See them in Kingdom Hearts.
John Wick is a widowed former Navy Seal who becomes a notoriously effective hitman, killing over 124 people with gunshots alone. See them in John Wick.
Give in to the dark side with vampire Lestat; it's more fun. See them in Interview with the Vampire: The Vampire Chronicles.
Murph is inquisitive, compassionate, and stubborn, with a passion for science she shares with her dad. See them in Interstellar.
Derek Morgan is thoughtful and kind, but he won't say no to knocking the occasional door down when he gets the chance. See them in Criminal Minds.