Because you like Frederick Frankenstein in Young Frankenstein
Count Olaf is a traveling actor, except he can't act and his homicidal tendencies make finding work pretty difficult. See them in Lemony Snicket's A Series of Unfortunate Events.
Louis de Pointe du Lac is wanting to find a way of living that doesn't make him miserable. See them in Interview with the Vampire: The Vampire Chronicles.
Jughead Jones loves burgers, his friends, and philosophizing with his unique brand of wisdom. See them in Archie Comics.
Charlie Bucket may be down-on-his-luck, but his spirits are always sky high. See them in Charlie and the Chocolate Factory.
Clarice Starling is patiently working with one serial killer to stop another. See them in The Silence of the Lambs.
Krusty The Clown somehow makes life sillier and more somber at the same time. See them in The Simpsons.
A suave manipulator, Sebastian Valmont is valiantly fighting off a developing conscience. See them in Cruel Intentions.
Dewey Finn will rock you. He feels rock and roll in his blood and guts. See them in School of Rock.
Vincent Vega likes a good steak, a cheap milkshake, and killing a target without anything going wrong. See them in Pulp Fiction.
With a song always on her lips and her heart on her sleeve, Maria von Trapp is the governess every kid dreams of. See them in The Sound of Music.
In his heart, this student rebel is more of a lover than a fighter. See them in Les Miserables.
Cyclops shoots lasers out of his eyes, destroying anything in his line of sight. See them in X-Men Series.