Because you like Neil Perry in Dead Poets Society
Impassive, overly literal, and a little short on people skills, Angel dedicates her life to enforcing the rules. See them in Angel Beats!.
Christian Grey is just as controlling in the bedroom as the boardroom. See them in Fifty Shades of Grey.
Although Morrigan knows every kind of magic there is, friendship is an untested area for her. See them in Dragon Age Series.
Ethan Hunt's mission, should he chose to accept it, is to save the world from impossible threats. See them in Mission: Impossible.
An All-American football player, a ping pong star, and a freakishly determined runner, Forrest Gump has a ton of stories to tell. See them in Forrest Gump.
Django was once a slave. Now that he has a taste of freedom, he understandably wants a full meal. See them in Django Unchained.
It doesn't matter how noble or brave he is. Jon Snow is a bastard, and people don't let him forget it. See them in Game of Thrones.
Raiden is an efficient soldier haunted by his repressed past. See them in Metal Gear Series.
Wei Shen is an undercover cop on a mission for justice (or at least vengeance). See them in Sleeping Dogs.
Konata Izumi has a live-now, worry-later view of the world. See them in Lucky Star.