Buttercup

Buttercup, Don't Touch the Horses, They Bite, is a unique Unicorn that can be found in Gideon's Row in Diablo III.

This monster appears in Adventure Mode with some chance, as a head of the horde of Cuddle Bears.

In combat, it has the Orbiter affix.

This is the only unique Unicorn that spawns outside Whimsyshire or Whimsydale.

Trivia

 * The name and title of this monster are a possible reference to Buttercup, the diabetic police horse in the movie Half Baked.