Because you like Beverly Crusher in Star Trek: The Next Generation

Veronica Mars is a sarcastic private eye whose biggest mission is surviving high school. See them in Veronica Mars.

As the unit chief of the FBI's Behavioral Analysis Unit, Aaron Hotchner is dead serious about avenging dead people. See them in Criminal Minds.

A meek schoolteacher, Mary Margaret Blanchard can't remember her past as a spirited, swashbuckling Snow White. See them in Once Upon a Time.

Matilda Wormwood is so smart, she taught herself how to be psychic. See them in Matilda.

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.

Jacob Kowalski is just a baker caught up in an otherworldly adventure. See them in Fantastic Beasts and Where To Find Them.

Samwell Tarly is a scholar, not a fighter. But that's not good for an aspiring member of the Night's Watch. See them in Game of Thrones.

James T. Kirk is more than ready to face the final frontier. See them in Star Trek.

Mike Wheeler loves Dungeons and Dragons, even after his real life starts imitating the game. See them in Stranger Things.

Burton Guster is a level-headed investigator with a "Super Sniffer" nose. See them in Psych.

Eugene H. Krabs is a greedy restaurant owner who won't let a dime out of the reach of his claws. See them in SpongeBob SquarePants.