Mother Dorrie

Mother Dorrie is an anomalous enemy encountered in Super Mario 64, reused/created by Personalisation A.I. It is encountered in Hazy Maze Cave in Dorrie's spawn placement. This version of Dorrie is extremely hostile, and may be a reason of children's old nightmares about being eaten by Dorrie.

Overview
The only image of Mother Dorrie is on the page. Mother Dorrie's skin is black (or dark blue, it may be the fault of the camera.) She has the same white bottom as Dorrie, but differs from aforementioned by sharp, long red teeth. Mother Dorrie, unlike its original counterpart, is aggressive. She will try to chase the player in the pond and will kill them instantly if catches them, resulting in a game over, ignoring all lives. Some additional reports claim that her back is spiked, and it is impossible to make her head low down.

Enemy Discoloration
It may be a product of Enemy Discoloring, since A.I. can recolor enemies and add the differences in their behavior. Dorrie is not an exception. Except for teeth, she is a full discoloring of the gentle sea dragon. It may also be possible that teeth are added to the texture of either mouth or jaws.

Don't become his lunch
This theory is far more speculated than enemy discoloration. The Hazy Maze Cave sign near Dorrie said: “A gentle sea dragon lives here. Pound on his back to make him lower his head. Don't become his lunch.” Maybe the developer team wanted to make Dorrie an exclusive threat to the level. But they realized that children would get nightmares from being eaten by a giant swimming beast, especially with the start of 3D. Mother Dorrie may be a manifestation of the old code that made it hostile, but with finishing touches made by A.I.

Gap Filler
It was the children's first experience with 3D, so they definitely had nightmares with the sea dragon that was bigger than Mario, and more came to shock after reading a sign. These children may be dreaming about Dorrie being a horrifying sea beast that swallows or violently munches Mario, and the rumor spreads due to the forgettable nature of kids. This rumor lives for today, and sometimes it may be a reason why A.I. puts it into the game.