Because you like Michael Scofield in Prison Break
A loyal assistant to Nelson and Murdock, Karen Page has a way of finding trouble. See them in Marvel Cinematic Universe.
Galina Reznikov is the head chef of prison, cooking up meals as well as storms on anyone who dares to cross her; even the guards are terrified of her. See them in Orange Is The New Black.
Howard Wolowitz is an engineer whose serious mommy issues somehow haven't dimmed his confidence. See them in The Big Bang Theory.
A scary monster on the outside, James P. Sullivan is really a softie on the inside. See them in Monsters, Inc..
A powerful priestess, Melisandre is shrouded in mystery and lots of red. See them in Game of Thrones.
Gina Linetti views herself as a sort of life coach/influencer to the rest of the office. She's not so keen on the "work" aspect of her job. See them in Brooklyn Nine-Nine.
Waylon Smithers would do anything for his boss, and would love to do a few things *to* him. See them in The Simpsons.
Harrison Wells is a brilliant scientist full of secrets. See them in DC Extended Universe.
This master marksman may be a villain, but Deadshot's motives aren't quite as selfish as they seem. See them in DC Extended Universe.