The character Dorrie did not originate from fanon, and more information can be found on their respective wiki(s). You may read more about it on the following wiki(s):

A gentle sea dragon lives here.
A sign, describing Dorrie.

Dorrie SM64S
”Don’t become its lunch!”
Full Name Dorrie
Location Hazy Maze Cave
Class Plesiosaur
Family and Relations
Plessie (possibly)
First Appearance Super Mario 64 (1996)
Latest Appearance New Super Mario Bros.

Dorrie is a Plesiosaur who inhabits a lake in Hazy Maze Cave. By ground-pounding on his back, you can get him to lower his neck, and if you climb onto his head, he’ll let you steer him around. Signs claim that he’ll eat you, but this isn’t the case. According to the Super Mario 64 manga, there is a whole species of creatures like Dorrie.


Dorrie is a dark blue plesiosaur with a large neck. It has four flippers with which he uses to swim, and sparkling black eyes. In New Super Mario Bros and Super Mario 64 DS, Dorrie is wearing goggles, giving him a rather silly appearance. Dorrie looks somewhat like Yoshi.

Game Appearances

Super Mario 64 2: Bowser Strikes Back

Dorrie appears in the level Aquatic Cave, having the same job that he does Super Mario 64.