Waluigi Apparition

The Waluigi Apparition is an anomaly that can appear in place of the Wario Apparition in Super Mario 64 DS. It takes the appearance of a large Waluigi head in the Castle Basement's Dire, Dire Docks hall. They will say "You want fun? Waluigi show you fun!" and begin to chase the player down the endless hall. Nobody as of yet has reached the end of the hall. Unlike the Wario Apparition, there is no known side effect of the Waluigi Apparition, except the trauma from the event.

Waluigi Asparagus
Another form of the Waluigi Apparition is known as Waluigi Asparagus, which only appears in the original Super Mario 64. It will appear in the Internal Plexus Village level, and will give helpful tips to avoid harmful anomalies and gives the player a star. However, the player can attack Waluigi Asparagus and begin a boss fight similar to the Wario Apparition boss fight. Due to the layout of the Internal Plexus Village, it is extremely hard to do damage and avoid the new Asparagus Missile attack, a homing asparagus thrown by Waluigi Asparagus. Upon being defeated, the Eternal Village level will be unlocked, though the player will experience long-term distress from the guilt of killing Waluigi Asparagus. Defeating Waluigi Asparagus unlocks the hidden Ultra Hard Mode Plus mode, and puts the player on the game's Genocide route.