Because you like Minerva McGonagall in Harry Potter Series

Frank Ginsberg is the number one Proust scholar in the world, but he recently failed at committing suicide. See them in Little Miss Sunshine.

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.

Ash Williams is a houseware clerk at S-Mart and the Chosen One. See them in The Evil Dead.

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

Given his ability to wrench street signs from the ground, Shizuo Heiwajima is a useful one to have in dangerous Ikekuburo. See them in Durarara!!.

Jack Bauer is a terrorist fighter who is scared of nothing and no one. The clock is ticking! See them in 24.

Smart and sensitive Sam Winchester tried to escape the family business, but ghosts have a way of haunting you. See them in Supernatural.

Sarah Ashburn lives life by the book and has trouble getting along with anyone who doesn't do the same. See them in The Heat.

A believer in the pursuit of justice, Garrus Vakarian hates it when bad guys slip through the cracks of the bureaucratic justice system. See them in Mass Effect.

Noah Calhoun is lost without Allie, who seems to have moved on. See them in The Notebook.