Because you like Ted Wiggins in The Lorax

A fearless scientist, Jane won't let a mere shipwreck stop her. See them in Tarzan.

Poison Ivy is a seductive, venomous botanist laments the fact that there are so many people to kill, yet so little time. See them in DC Extended Universe.

Bella Swan thinks of it as her job to help her parents and protect her friends, even though it often ends up the other way around. See them in Twilight.

Tracy Turnblad's got rhythm, and she's determined to share her dance moves with the world. See them in Hairspray.

Alison DiLaurentis believes you're always better off with a really good lie. See them in Pretty Little Liars.

Dominic Toretto lives his life "a quarter mile at a time", and he burns through those miles faster than anyone. See them in The Fast and the Furious.

Margo loves mysteries so much that she becomes one. See them in Paper Towns.

A 100-plus-year-old who looks like a dreamy teenager, Edward Cullen warns girls to avoid him, which makes them want him even more. See them in Twilight.

A benevolent madman with a blue box, The Doctor is traveling through time and space to heal the wounds of the universe. See them in Doctor Who.

Ron Swanson is the man's man's man's man. See them in Parks and Recreation.

Hell hath no fury like an evil fairy scorned. See them in Maleficent.

Brilliant, violent, and only a little insane, the Joker doesn't listen to anyone except the voices in his head. See them in DC Extended Universe.