Because you like SHODAN in System Shock

Garnet is a Crystal Gem who'll protect her friends with her life. See them in Steven Universe.

In a rag-tag group of kids determined to take down the imperialistic Fire Lord, Katara is the glue that holds them together. See them in Avatar: The Last Airbender.

Alex Vause's tattoos and tough exterior cover the fact that she's just a girl with a really intense crush. See them in Orange Is The New Black.

Moe Szyslak is the crabby owner of the grimiest bar in Springfield. See them in The Simpsons.

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.

From arguing for democracy in the Galactic Senate to pursuing a forbidden romance, Padme Amidala handles danger gracefully. See them in Star Wars Series.

Stewie Griffin is just your average evil-genius, talking, sociopathic baby. See them in Family Guy.

The incomplete experiment of an inventor, Edward Scissorhands was left with blades instead of hands and an unpolished understanding of the world. See them in Edward Scissorhands.

Thanks to the contributions of this 14-year-old, the world is only occasionally destroyed by his grandfather. See them in Rick and Morty.

T'Challa is a regal superhero with the weight of the world (and particularly his nation) on his shoulders. See them in Marvel Cinematic Universe.

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