What is the name of the snow monster in 'Rudolph the Red-Nosed Reindeer'?

The Abominable Snowman

What was the name of the three-headed dog guarding the Underworld? In the series 'Buffy the Vampire Slayer,' who was originally a vampire with a soul? In Scrabble, how many points is the letter 'Z' worth? Which team drafted Ray Allen originally? What term describes animals that primarily feed on insects?