Polterguy

Polterguys (also known as Phantom Guys  ) are red, yellow, and blue Shy Guys based on Boo Guys that appear in the Mario vs. Donkey Kong series. The name "Polterguy" is based on poltergeist, referring to its somewhat spectral appearance.

Polterguys first appear as enemies in Mario vs. Donkey Kong, and are found in the Spooky House world. Like other enemies in the game, coming in contact with Mario will cause him to die and lose a life. They cannot be defeated, but they can be turned into blocks when Mario presses a button the same color as the ghosts, allowing him to pass by. In the boss stage, Polterguys have flame-like auras similar to Pyro Guys, and use different attack patterns: Donkey Kong will hit one of three Color Switches, transforming a Polterguy into a regular Shy Guy that Mario can use against him.

In Mario vs. Donkey Kong 2: March of the Minis, they appear in the Spooky Attic stage. They mostly retain their appearance and patterns from the last game, serving as obstacles to the Mini Mario toys that can be turned into playforms. In the Construction Zone, Polterguys can be used in the Spooky Attic and Special Kit 3 sets.

Polterguys appear in Mario vs. Donkey Kong: Minis March Again!, where have active wind-up keys on their backs like their walking counterparts. They are also less transparent, and have a spherical aura of fire that resembles their boss stage appearance from the first game. In addition, they remain in the same spot rather than move in a given pattern, though they still turn to face any Mini Marios present. They are first encountered in Room 4-5.

In Mario vs. Donkey Kong: Mini-Land Mayhem!, Polterguys appear as enemies that Donkey Kong summons in Area 4-DK.