Because you like Knuckles the Echidna in Sonic the Hedgehog

Whether he's fighting or flirting, Jace Wayland is all swagger. See them in City of Bones.

Running away from murderous aliens has turned into an interstellar chase for Jupiter Jones. See them in Jupiter Ascending.

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

Bridget Jones is a wanton sex goddess, struggling 30-something, and semi-hot mess. See them in Bridget Jones's Diary.

Charming and confident, Gus Waters is determined to leave a lasting mark on the world. See them in The Fault in Our Stars.

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

This high school queen bee has everything, including a genius-level IQ—a fact Lydia Martin keeps hidden to maintain her image. See them in Teen Wolf.

Dimitri Belikov is a stoic vampire guardian who has the reserve, focus, and discipline of a soldier. See them in Vampire Academy .

Everyone Barney Stinson knows is getting married or pregnant. But he's just getting more awesome. See them in How I Met Your Mother.

Nadine Franklin likes to wallow in her misery almost as much as she likes to torment her mother. See them in The Edge of Seventeen.

Rose Hathaway is a reckless, rebellious smartass who's training to be a royal vampire guardian. See them in Vampire Academy.