Because you like Marv in Sin City
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.
With an undeniable sense of adventure, Huck Finn is an expert at getting into and, more importantly, out of sticky situations. See them in The Adventures of Huckleberry Finn.
Aldous Snow is a rock star who plays hard and parties harder. See them in Get Him to the Greek.
It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.
Xander Harris' life motto: laugh in the face of danger and then hide until it goes away. See them in Buffy the Vampire Slayer.
When it comes to Haruko Haruhara, there's more to the pink-haired biker than meets the eye. See them in FLCL.
The Terminator is an emotionless killing machine who won't stop until he's changed the future. See them in The Terminator.
Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.
Jim Stark is a teen torn apart by what the world asks of him. See them in Rebel Without A Cause.
An opportunistic fugitive-turned-bounty-hunter, Faye Valentine uses both grit and her good looks to get ahead. See them in Cowboy Bebop.
It's impossible to say whether Winifred Burkle is cuter than she is smart, or vice versa. See them in Angel.