Buffy The Vampire Slayer: 10 Best Single Episode Villains

4. Olaf the Troll

Episode: Triangle (Season 5, Episode 11) Olaf was once a human Viking (who, ironically, often hunted trolls) and Aud's AKA Anya's former lover. He cheated on her with a 'load-bearing' bar matron called Rannveig and was subsequently punished by her cursing him with boils on his penis and then transforming him into a gigantic troll, using a spell known as Thornton's Hope. It was the skill shown in carrying out this spell which brought Aud (Anya) to the attention of the demon D'Hoffryn, who recruited her as a vengeance demon. At first, Olaf tried in vain to make his fellow humans recognise him in troll form, but within minutes he adjusted to his new form and began enjoying his new powerful status. Olaf, however, was eventually trapped in a crystal by witches. Olaf would eventually be inadvertently freed from this crystal by Willow Rosenberg when one of her spells went awry due to Anya's inability to keep quiet during the casting of it. Olaf would go on to cause mayhem in the Bronze and at the Magic Shop, whilst threatening to pillage the land, eat babies, make merry sport with the more attractive women of Sunnydale and... burn their crops. He badly injured Xander and was going to make him choose who he was going to kill - his friend Willow or his lover Anya (who, as previously mentioned, was also Olaf's lover in his life as a human) - but he was defeated by Buffy and sent to an alternate universe. Olaf's hammer would later be used by Buffy herself during her battle against the hell-god Glory. Note: Olaf did also appear in 'Selfless' (Season 7, Episode 5), but this was only in flashbacks and not as a Scooby villain.