Because you like Egon Spengler in Ghostbusters

John Tyree has survived heavy gunfire and aggressive enemy soldiers. But can he handle a girl? See them in Dear John.

Harry Potter is the boy who lived! See them in Harry Potter Series.

Steve Stifler is more than just a dude with a hot mom. He's also rude, profane, and obnoxious. See them in American Pie.

A formerly timid caterpillar, Kurt Hummel is transforming into a glamorous, confident butterfly. See them in Glee.

After training a herd of raptor dinosaurs, everything else is a breeze for Owen Grady. See them in Jurassic World.

Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.

Stranded on Mars, Mark Watney is armed with quick wits, an electronic diary, disco music, and an undying resolve to make it back. See them in The Martian.

The star of every school production since kindergarten and the most popular girl of East High, Sharpay Evans usually gets her way. See them in High School Musical.

John Locke is an eerily calm, confident believer in the magic of the island that gave him his legs back. See them in Lost.

Nomi Marks is a brilliant hacker with an open-minded, accepting spirit. See them in Sense8.

Jax Teller can be cool or vengeful, calm or wrathful, depending on the situation. See them in Sons of Anarchy.

His name is Olaf, he's a snowman, and he likes warm hugs. See them in Frozen.