Because you like Morticia Addams in The Addams Family
Puss In Boots is a suave, honorable ladies man/cat who's not above playing cute to get you to let down your guard. See them in Shrek 2.
Leonidas is not the kind of king who merely gives orders; rather, he's out on the battlefield fighting alongside his men. See them in 300.
Clementine is a beacon of innocence in a dangerous, deadly world. See them in The Walking Dead (Video Game).
A no-nonsense hitman with a taste for good burgers and divine justice, Jules Winnfield will go to great lengths to please his boss. See them in Pulp Fiction.
The son of Death has an obsession with perfection and symmetry. See them in Soul Eater.
Even the smallest person can change the course of the world, if he's brave enough. See them in The Lord of the Rings.
While he might be too cool for school, Soul isn't too cool to do the right thing. See them in Soul Eater.
Make sure not to anger the Hulk or else he will transform into a giant green monstrosity and smash anything in his way. See them in Marvel Cinematic Universe.
Few high school students could be less concerned with labels. See them in Ouran High School Host Club.
Charles Xavier is a telepath who believes mutants and humans are both good at heart and can live in harmony. See them in X-Men Series.
Dipper Pines is investigating a truly strange town during the world's wildest summer vacation. See them in Gravity Falls.
Gollum is slimy and seething with hatred, the last person you would want to meet in a dark cave. See them in The Lord of the Rings.