White-eyed Chomp

The White-eyed Chomp is a rare anomaly caused by the personalization algorithms of Super Mario 64, removing the pupils of the Bob-Omb Battlefield Chain Chomp. Usually, seeing this anomaly serves as a warning that the game copy is going to have significant amounts of personalization (e.g., Wario Apparition).

Behaviour
The chain-chomp itself behaves expectedly, attempting to attack the player until it's stump is ground-pounded, where it breaks the cage holding the star and hops off. However, what it signifies is what sets it apart from its 'normal' counterpart. The appearance of this anomaly often precedes major changes to the gameplay caused by the AI. These can range from almost all of the enemies in the game sharing its pupil-free complexion, modifications in other game textures, slight changes to Mario's movement mechanics, and even larger ones like the Fourth Floor appearance.

Effects
The effects of the White-Eyed Chomp are incredibly varied, even randomized at points, and the possible amount of outcomes is too much to fit on one page, so we've created an entire page to document people's reports.

Evidence
https://www.youtube.com/watch?v=wxck2SrHpAk