Bunny

Bunnies are a race of humanoid rabbits who live on Bunny Island. The "good bunnies" are led by Funny Bunny (the Easter Bunny), while the "evil bunnies" led by Bunnylord have formed a gang to attack adventurers. Funny Bunny is capable of polymorphing humans into the bunny race as well.

Source
They are found in the Warcraft III map Funny Bunny's Egg Hunt.

Trivia

 * The voices of the bunnies and "bunniefied" humans of Bunny Island sound like Jimmy Stewert, most likely an in-joke/homage to the movie Harvey.