Because you like Princess Bubblegum in Adventure Time

She's mostly doom and gloom, but you'd get nowhere without Sadness. See them in Inside Out.

Stewie Griffin is just your average evil-genius, talking, sociopathic baby. See them in Family Guy.

Claire Underwood is scary intimidating, and she knows it. See them in House of Cards.

Connor Walsh is arrogant enough to think he's the smartest guy in the room, and quick-witted enough to prove that he is. See them in How to Get Away with Murder.

Sookie Stackhouse is a waitress who can read minds and break hearts. See them in True Blood.

Motivated by a strong sense of curiosity, fleet-footed Lina Mayfleet is happiest when she's on the move. See them in The City of Ember.

Lloyd Dobler is a kickboxer wearing his heart on his sleeve who would do anything for the woman he loves. See them in Say Anything.

1986 is Eddie Munson’s year, at least until a mysterious force begins plaguing Hawkins yet again and he’s suspected of murder. See them in Stranger Things.

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.

Stoic, cynical, and brilliant, Solid Snake was genetically engineered to be the perfect soldier. See them in Metal Gear Series.