Because you like Mark Watney in The Martian

Francis Freeman may be impervious to pain, but he sure knows how to inflict it. See them in Deadpool.

A tough tomboy with a protective streak, Maximum Ride is a human-bird hybrid. See them in Maximum Ride.

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

Will Herondale is an emotionally distant bad boy with a secret. See them in Clockwork Angel .

Tobias "Four" Eaton is only afraid of four things, but you should probably be afraid of him. See them in Divergent.

If you died and came back to life, and then died more times and came back, you might stop battling evil mutants. Not Jean Grey. See them in X-Men Series.

Gruff and efficient, Sam Fisher protects a nation that can never admit he exists. See them in Tom Clancy's Splinter Cell.

R is sweet for a zombie. See them in Warm Bodies.

Formerly a "sweater-set-wearing, mojito-drinking sorority girl", Paige Collins is now a successful sculptor with slight memory loss. See them in The Vow.

Charming and confident, Gus Waters is determined to leave a lasting mark on the world. See them in The Fault in Our Stars.

With an A.I. as loyal and witty as Cortana, who needs humans? See them in Halo.

People think that because Tris is small, or a girl, or a Stiff, she can't possibly be cruel. But they're wrong. See them in Divergent.