Because you like James T. Kirk in Star Trek

Resourceful and pragmatic, Selina Kyle always keeps in mind her number one priority: herself. See them in Gotham.

All who live know his name, and all who oppose him shall know Death. See them in Darksiders Series.

George Costanza is short, stocky, bald, neurotic, and the self-proclaimed "king of the idiots." See them in Seinfeld.

Good fashion? Check. Snarky quips? Check. Supernatural evil-fighting powers? Also check. See them in Buffy the Vampire Slayer.

Genetically and cybernetically enhanced, Gamora was trained from birth to be one of the deadliest women in the galaxy. See them in Marvel Cinematic Universe.

Riggan Thomson is a washed-up movie star running from his inner demons. Alas those inner demons look just like the superhero he used to play. See them in Birdman.

Kumar Patel is always high, always hungry for sliders. See them in Harold & Kumar Go To White Castle.

An underdog with nothing left to lose, Donnie Creed has everything to prove. See them in Creed.

Her unhappy childhood has left her unsure of the existence of happy endings. Mary Jane Watson hides her pain beneath a joke and a smile. See them in Marvel Cinematic Universe.

Ava may just be the perfect woman. So long as she can pass a Turing test. See them in Ex Machina.

A great galactic bounty hunter, Samus Aran is not as good at expressing emotions. See them in Metroid.

Leslie Knope can accomplish anything, literally anything, with a little grit and help from her office. See them in Parks and Recreation.