The Alpha Werewolf

"You kill with it or it kills you."- Derek Hale to Scott McCall.

The chief antagonist, the "big bad", of MTV's Teen Wolf during the first season is a werewolf known simply as "The Alpha".

"The Alpha" is blamed for biting Scott McCall in Wolf Moon.

Derek Hale claims it is trying to build a pack of which Scott would apparently be the first member if he is willing to kill with "The Alpha". If not, Derek claims the larger werewolf will kill the boy.

According to Derek "The Alpha" is more powerful and dangerous than either he or Scott and has the power to mentally call to Scott.

After the events of Heart Monitor he appears Scott and "The Alpha" share some sort of low level telepathy.

"The Alpha" was kept mostly in shadow until Heart Monitor when it attacked Derek. He appears to be more than seven feet tall when standing on his hind legs and almost completely wolf-like with glowing red eyes. At the end of Lunatic, we saw it transform back into a human but did not see the Alpha's human identity.

"The Alpha" is officially blamed for five deaths, the bus driver in Pack Mentality, the Video 2*C employee in The Tell the janitor in Night School and the two tough guys in Lunatic.

He is supsected of killing Derek's sister Laura Hale but this was not shown as her death came before the events of the first episode. He nearly killed Derek during a bloody attack in Heart Monitor.

In the ninth episode, Wolf's Bane, the alpha is revealed to be Derek's supposedly paralyzed uncle, Peter Hale. Peter confirms how he killed Laura, and how awful it was to kill his own niece.