An enemy that can randomly spawn in the Eridium Blight map is called Donkey Mong, an obvious reference to the Nintendo character "Donkey Kong". Not only is his name just a simple letter replacement, but he attacks the player by throwing barrels, similar to Donkey Kong's first title. Upon killing Donkey Mong, the player will earn the achievement "Definitely An Italian Plumber", a reference to the Mario series, also by Nintendo, as well as an achievement in the first Borderlands, "My Brother is an Italian Plumber".