Because you like John Tyree in Dear John

Tail's smarts and helpful nature come in handy in a pinch. See them in Sonic the Hedgehog.

Casey Gardner is an angsty teenage girl with quite a bit of sass that keeps getting her in trouble. See them in Atypical.

A hurricane of a human being, Marla Singer is destructive and unforgettable. See them in Fight Club.

Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.

Randy Marsh is a geologist and Nobel Prize winner who is into binge drinking, starting riots, the Food Network, and P.F. Changs. See them in South Park.

Insightful about everyone else's neuroses, Rose Lalonde is not as aware of her own. See them in Homestuck.

Known as the "rat king" of Paddy's Pub, bartender Charlie Kelly spends most of his time drinking at his bar instead of serving drinks to customers. See them in It's Always Sunny in Philadelphia .

A plucky 13-year-old with a flair for the dramatic, Kiki is a witch in training. See them in Kiki's Delivery Service.

Causing mayhem practically since birth, rambunctious Fred Weasley plays pranks on his siblings and avoids school at all costs. See them in Harry Potter Series.

Sensual, wild, and with a penchant for controlled substances, Lily is a ballet dancer who isn't afraid to let loose. See them in Black Swan.