Because you like Leonard Hofstadter in The Big Bang Theory

Summer Roberts is privileged and preppy but also surprisingly open-minded and fiercely loyal. See them in The O.C..

Impassive, overly literal, and a little short on people skills, Angel dedicates her life to enforcing the rules. See them in Angel Beats!.

Beware! Anton Chigurh carries a coin with him, which he forces his victims to flip to decide whether they will live or die. See them in No Country for Old Men.

Smart and sensitive Sam Winchester tried to escape the family business, but ghosts have a way of haunting you. See them in Supernatural.

While his twin tries to save lives, Millions Knives does the best to end them. See them in Trigun.

An agile and powerful swordswoman, Saber is a dignified warrior down to her bones. See them in Fate/Stay Night.

Michaelangelo is an above-ground crime-fighter by night, and a pizza-eating, sewer-dwelling mutant ninja turtle by day. See them in Teenage Mutant Ninja Turtles.

The brilliant and well-adjusted Ender Wiggin is being groomed for the next generation of military leaders to fight alien invaders. See them in Ender's Game.

Never shy about sharing what she thinks, Beatrice loves to make smart remarks and keep men on their toes. See them in Much Ado About Nothing.

Brilliant, violent, and only a little insane, the Joker doesn't listen to anyone except the voices in his head. See them in DC Extended Universe.

An arrogant, prideful human-demon hybrid, Inuyasha secretly just wants to be accepted. See them in Inuyasha.