Because you like Mark Watney in The Martian

The singer and ukulele player of her girl band, Sugar "Kane" Kowalczyk is the life of a party and the woman of a man's dreams. See them in Some Like It Hot.

The Kid doesn't talk. He just acts with determination. See them in Bastion.

R2-D2 has been in the galaxy saving business for decades. Not bad for somebody whose vocabulary is limited to "beep-boop." See them in Star Wars Series.

Steven Universe is an excitable youth who likes junk food and trying to save the world. See them in Steven Universe.

Stubborn, impulsive, and fun-loving, Hallie Parker is not afraid to devise some schemes to bring her family together. See them in The Parent Trap.

Fun and feisty on the outside, Meredith Grey is dark and twisty on the inside. See them in Grey's Anatomy.

Fate has forced Amuro into the terrors of war, and he must use the Gundam and all of its power if he is to make it out alive. See them in Mobile Suit Gundam Series.

Smart, sarcastic, and loyal, Stiles Stilinski doesn't just want to be the sidekick in someone else's life. See them in Teen Wolf.

Maurice Moss is a dedicated IT guy who even talks like a computer. See them in The IT Crowd.

Scar is sneaky, snarky, and always striving for more power. See them in The Lion King.

Darcy Lewis is a razor-sharp scientist studying things that science can't explain. See them in Thor.

Jillian Holtzmann's madcap mind is always whirring and she will transform anything into one of her machines. See them in Ghostbusters (2016).