Because you like Grace Gardner in Scream Queens
The quiet, intense Daryl Dixon lets his crossbow do the talking. See them in The Walking Dead.
Light Yagami has a plan to make a better world, and morals won't stop him. See them in Death Note.
Thor is Asgardian nobility who is tickled by how us earthlings live. See them in Marvel Cinematic Universe.
Finn is the world's last human who's "all about" understanding right and wrong. See them in Adventure Time.
SpongeBob SquarePants lives in a pineapple under the sea. Absorbent and yellow and porous is he. See them in SpongeBob SquarePants.
Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.
He's an eccentric pirate making it up as he goes along. He's Jack Sparrow, savvy? See them in Pirates of the Caribbean: the Curse of the Black Pearl.
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.