Because you like Peter Bishop in Fringe
K-2SO is a blunt and sarcastic reprogrammed Imperial droid who is always up for an adventure. See them in Rogue One.
For the sake of science, Kurisu Makise will persevere no matter how deep into the dark secrets of the world she finds herself. See them in Steins;Gate.
Petyr Baelish's main assets? A sharp mind, deep pockets, and no scruples. See them in Game of Thrones.
Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.
Baloo is a fun-lovin' bear who just needs the bare necessities of life See them in The Jungle Book.
A good-natured and academically minded superhero, Dan Dreiberg can still get his hands dirty in a fight. See them in Watchmen.
Neal Cassidy is a charming former thief with a heroic side. See them in Once Upon a Time.
Veronica Mars is a sarcastic private eye whose biggest mission is surviving high school. See them in Veronica Mars.
Clarice Starling is patiently working with one serial killer to stop another. See them in The Silence of the Lambs.
Lloyd Dobler is a kickboxer wearing his heart on his sleeve who would do anything for the woman he loves. See them in Say Anything.
A monstrous pirate captain, Davy Jones is quite literally heartless. See them in Pirates of the Caribbean: the Curse of the Black Pearl.