Because you like Optimus Prime in Transformers
Vincent Vega likes a good steak, a cheap milkshake, and killing a target without anything going wrong. See them in Pulp Fiction.
Raised to happily follow the rules, Cassia might actually be more rebellious than she thinks she is. See them in Matched .
A powerful priestess, Melisandre is shrouded in mystery and lots of red. See them in Game of Thrones.
Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.
Aimee Finecky has big dreams, but she's too busy taking care of everyone else's desires. See them in The Spectacular Now.
A bloodsucker, Carlisle Cullen is actually more likely to give you a blood infusion. See them in Twilight.
Effortlessly sexy, calm, and collected, Eric Northman is equally at home ripping off heads and flirting with waitresses. See them in True Blood.
Give in to the dark side with vampire Lestat; it's more fun. See them in Interview with the Vampire: The Vampire Chronicles.
Joey Tribbiani's true passions in life are acting, sandwiches, football, sex, and asking ladies, "how you doing?" See them in Friends.
Gomez Addams fills his days with ghoulish and ghastly forms of recreation, enjoying life and all its pleasures to the fullest. See them in The Addams Family.
It's easy to see why Poe Dameron would side with the rebellion: he's bad at taking orders, likes to show off, and is committed to the cause. See them in Star Wars Series.