Peter Nicols was an evil and completely delusional student at Sunnydale High and a member of the Cult of Avilas. He tried to sacrifice Cassie Newton to summon the demon Avilas, leading the cult in the Invocation of Avilas.
Buffy saved Cassie and killed Avilas (though Cassie died of a heart attack later, anyway), but not before Avilas bit Peter's neck, causing him to bleed. As punishment for what he had done, Buffy and Spike made no effort to help him, helping Cassie instead.
Behind the Scenes
- He was portrayed by Zachery Ty Bryan, more well known for playing Brad Taylor on "Home Improvement".