Because you like Derek Shepherd in Grey's Anatomy

Cosima Niehaus loves exploring the unknown. Even her own DNA is a puzzle, waiting to be unlocked. See them in Orphan Black.

Edward Kenway can be reckless and greedy, but he's learning that his ancient ancestry carries a noble burden. See them in Assassin's Creed Series.

Raphael is a short-fused hothead who loves a good fight and some tasty pizza. See them in Teenage Mutant Ninja Turtles.

GLaDOS will supply the food when you get together: a delicious cake. Of course, it could just be a trap so she can kill you. It’s hard to say. See them in Portal Series.

If you need her, Lisa Simpson will be in her room with her saxophone and a good book. See them in The Simpsons.

As a scaring Assistant, Mike Wazowski frightens children to collect their screams to be used as a power supply for the city. See them in Monsters, Inc..

Both brave and foolhardy, Thomas trusts his instincts above all else. See them in The Maze Runner.

Always headed towards adventure, Goku is frequently with a band of loyal companions at his side. See them in Dragon Ball.

An off-beat dork, John Egbert is funny, inventive, and endlessly optimistic. See them in Homestuck.

Oliver Tate is extremely articulate but hopelessly awkward. That's not a recipe for teenage happiness. See them in Submarine.

Sabriel is smart enough to understand the dangers that await her and brave enough to face them anyway. See them in Abhorsen Series.

Regina Mills is a cold evil queen turned chilly town mayor. See them in Once Upon a Time.