Jack O'Toole was a zombie and a student of Sunnydale High School and a gang leader in the TV series, Buffy The Vampire Slayer. He was portrayed by Channon Roe.
He was killed in a drive-by shooting. His grandfather found him, raised him from the dead- Jack being resurrected so shortly after his death that he never showed any sign of being dead apart from the bullet holes under his shirt-, and presumably taught him how to raise his friends. He attempted to 'recruit' Xander Harris as the group's driver as he led a gang of zombies whose intent was to blow up Sunnydale High, but Xander fled from the group when they tried to kill him. After Xander disarmed the bomb, he fled from Jack through the school, only for Jack to be eaten by Oz while Oz was in wolf form.