Because you like Khan Noonien Singh in Star Trek Into Darkness

Arwen has to choose between a life of loneliness or love and inevitible death, both rather unfortunate options. See them in The Lord of the Rings.

Dante Alighieri is a crusader fighting his way to absolution. See them in Dante's Inferno.

Kara "Starbuck" Thrace will beat you in cards, drink you under the table, then fly circles around you in her fighter plane. See them in Battlestar Galactica.

A Wakandan spy, Nakia is capable, caring, and just the right amount of stubborn. See them in Marvel Cinematic Universe.

Relentlessly cheery Ned Flanders enjoys a nice piece of bread with water on the side for dipping See them in The Simpsons.

Obi-Wan Kenobi is a sage Jedi who doesn't need to say much to teach you a galaxy's worth of wisdom. See them in Star Wars Series.

A bumbling hobbit, Bilbo Baggins is becoming a part of something much larger than himself as he embarks on a quest. See them in The Hobbit: An Unexpected Journey.

Madman, murderer, or musician? No one knows the Phantom behind the mask. See them in The Phantom of the Opera.

The Grinch's heart is just too small to appreciate Christmas. See them in Dr. Seuss' How the Grinch Stole Christmas.

M. Bison is a diabolical megalomaniac hell-bent on dominating the world. See them in Street Fighter.

Mother Gothel is a great mother as long as you never, ever, break the rules. See them in Tangled.