Because you like Diddy Kong in Donkey Kong
Stranded on Mars, Mark Watney is armed with quick wits, an electronic diary, disco music, and an undying resolve to make it back. See them in The Martian.
Steve Rogers is a good soldier. But above all, he's a good man. See them in Marvel Cinematic Universe.
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.
A caring, curious, and considerate android, Vision could crush your skull if he had to. But he'd rather not. See them in Marvel Cinematic Universe.
Lane Kim is the drummer for Hep Alien, but don't let her mom know. See them in Gilmore Girls.
Stuck on a lifeboat with zoo animals without food and fresh water, Pi Patel uses his intelligence to face the greatest test of all: survival. See them in Life of Pi.
Derek Hale is not one to make allies easily. This moody werewolf is dark and brooding. See them in Teen Wolf.
Toph is a tenacious earthbender full of spirit and spunk and hates when people try to baby her because she's blind. See them in Avatar: The Last Airbender.
James Wilson is a compassionate doctor who willingly plays the sidekick. See them in House M.D..
Ethical but anxious, Chidi Anagonye approaches life like a problem to be solved. See them in The Good Place.
Basically a giant pillow come to life, Baymax is a medical robot created for the sole purpose of helping people. See them in Big Hero 6.