Because you like Doogie Howser in Doogie Howser, M.D.

Bookish and socially anxious, Ruby Roundhouse is a teenager turned action heroine. See them in Jumanji.

Stella Grant is an organized, orderly optimist living with a dangerous disease. See them in Five Feet Apart.

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

Sam Montgomery works hard, but her evil stepmother makes sure her efforts don't pay off. See them in A Cinderella Story.

The fearless bodyguard of Rick Flag, Katana will ruthlessly kill her enemies, trapping their souls in her sword. See them in DC Extended Universe.

One of the best in the magical world, Mad-Eye has the battle scars to prove his dedication to such a dangerous job. See them in Harry Potter Series.

Barry Egan has too many anger issues to list here. See them in Punch Drunk Love.

Simon Spier has long known that he's gay, but he doesn't know how to open up about that – even to his closest friends See them in Love, Simon.

Born and raised in the darkness, Bane is determined to have the city totally under his control so that he can demolish it. See them in DC Extended Universe.

Driven and straightforward with high-technology parts, EVE was sent to Earth to see if it is habitable. See them in WALL-E.

Susan Caraway joyfully dances to the beat of her own drum. See them in Stargirl .

David Rossi may chase serial killers for a living, but he's more interested in what wine pairs well with tonight's parmigiana. See them in Criminal Minds.