Because you like Will Schuester in Glee

Hans Landa doesn't seem to have issues with Jews, but he hunts them because he's determined to do his job well. See them in Inglourious Basterds.

James T. Kirk is more than ready to face the final frontier. See them in Star Trek.

A self-professed psychopath, James kills small animals for fun. After getting bored of that, he is ready for an ambitious murder. See them in The End of the F World.

Sylar's victims are found all over the country, many with their brains removed. See them in Heroes.

An intriguing bundle of contradictions, Sawyer Ford trusts no one on the island, and no one should trust him. See them in Lost.

Academics weren't his strong suit. Luckily, Jesse Pinkman's street smarts are a cut above the rest. See them in Breaking Bad.

This mathematical genius doesn't have time for small talk; Alan Turing needs to break Enigma, the Nazi's cipher machine. See them in The Imitation Game.

A vampire hunter, Integra Hellsing doesn't tolerate failure, least of all her own. See them in Hellsing.

Impassive, overly literal, and a little short on people skills, Angel dedicates her life to enforcing the rules. See them in Angel Beats!.

Angel is fighting as best as he can, but the disease might be too powerful for even his strong, positive energy. See them in Rent.

Good fashion? Check. Snarky quips? Check. Supernatural evil-fighting powers? Also check. See them in Buffy the Vampire Slayer.

After Otto Octavius' accident, he becomes fixated on finishing the reactor at any cost. See them in Marvel Cinematic Universe.