Because you like Marge Simpson in The Simpsons

A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.

Ava may just be the perfect woman. So long as she can pass a Turing test. See them in Ex Machina.

Carl Fredricksen is a crotchety old man who may just have it in him to take one last, great adventure. See them in Up.

Running away from murderous aliens has turned into an interstellar chase for Jupiter Jones. See them in Jupiter Ascending.

Beware! Anton Chigurh carries a coin with him, which he forces his victims to flip to decide whether they will live or die. See them in No Country for Old Men.

Shrek is a nasty-on-the-surface ogre with a heart of gold and an earful of wax. See them in Shrek.

Blade has all the cool vampire powers with none of the weaknesses. Definitely not a guy to pick a fight with. See them in Blade.

He might look like a pretty boy, but resourceful Leon Scott Kennedy is the man to have at your side during a crisis. See them in Resident Evil Series.

Yukiteru is a reclusive observer who would rather watch life go by than participate in it. See them in The Future Diary.

Red doesn't like to explain herself. She wants her work to do the talking. See them in Transistor.

Though he has a brilliant mind for mathematics, Christopher has a much harder time processing the rest of the world. See them in The Curious Incident of the Dog in the Night-Time.

Jim Stark is a teen torn apart by what the world asks of him. See them in Rebel Without A Cause.