The jovial jack-ass who'll spoil the book and then tell you the movie sucked, Spoiler the donkey always arrives ready to party. He is also very quick to judge a situation, and sometimes acts like he runs the show. His novel ideas rarely come to fruition, however, as he sounds like a country bumpkin and the cast has no idea what he's talking about half the time. Spoiler shrugs cares away with a kick of his hooves and his signature hearty chuckle.

Spoiler is voiced by Kuddlepup.

Spoiler made his debut in Episode 342 where he introduced himself as “I'm not a donkey! I'm an Ass!”. It was Poink who came up with a name for him, based on the fact that he popped up during a lengthy talk about movies and spoilers.