Dorrie resembles a blue plesiosaur with large eyes. He is possibly based on the Loch Ness Monster. As of Super Mario 64 DS, Dorrie received a redesign, most notably how he was given a pair of goggles very similar to that of a Dolphin's as well as having his head changed to more closely resemble a Yoshi's. Dorrie has used this design in most of his subsequent appearances, although Mario Party Advance, which released shortly after Super Mario 64 DS, reuses Dorrie's design from his original appearance in Super Mario 64.
Dorrie can be found casually in the basement level of Hazy Maze Cave, where he swims casually in a lake. Dorrie happily gives Mario a ride when he needs to. Dorrie swims around in circles continuously, but Mario can change which direction Dorrie moves depending on where he is facing. Mario can Ground Pound onto Dorrie's back to have him lower his neck, allowing Mario to ride on his head. Whenever Dorrie is Ground Pounded, he makes a whimpering sound.
There are a few ledges that can only be reached with the help of Dorrie. The first mission of Hazy Maze Cave, Swimming Beast in the Cavern, is focused on Dorrie, as Mario has to ride him in order to collect the Power Star located above a ground platform in the center of the lake. There is an even higher ledge where Mario can enter a room that leads into the secret area Cavern of the Metal Cap, but Mario can only reach it by jumping from Dorrie's head.
A Signpost in Hazy Maze Cave states that Dorrie can eat you, although in the game itself, Dorrie is completely harmless.
Dorrie retains his role from the original version, but with a few small difference. If Wario isn't being played, Dorrie can be seen wearing his cap. Dorrie now automatically lowers his head whenever the playable character approaches the base of his neck, meaning he no longer has to be Ground Pounded.
Dorrie reappears as an ally to Mario and Luigi by helping them travel across Poisoned Water in World 4-1 and World 4-6. Mario or Luigi can Ground Pound on Dorrie to make him swim faster.
Dorrie appears during the item mini-game called Dorrie Dip. Here, several items are seen on a raft, along with the Koopa Kid. The characters must Ground Pound onto Dorrie's back to have him pick up a raft. If Dorrie picks up an item, the character receives that item, but if Dorrie picks up the raft with the Koopa Kid on it, whoever Ground Pounded Dorrie during that turn is eliminated from the minigame.
Four plastic Dorrie platforms appear in the minigame Tug-o-Dorrie, colored red, blue, green, and yellow each. Each of the four characters are standing on one of the Dorrie platforms, and the object is for each of them to try and yank their opponents off their platform and down into the water. The winning criteria depends on who is the last character to still be standing on their Dorrie or who is left standing once the time is up.
Mario Party Advance screenshot of Dorrie, who asking Yoshi if he is a dinosaur
Dorrie lives in Loch Dorrie. Dorrie is lonely as he says that he scared away Mr. E and wants a new dinosaur friend. Yoshi is required to visit and therefore befriend Dorrie so that the player can obtain the Soil SonarGaddget from Dorrie.
In the ending credits, it shows Dorrie saying that Yoshi ought to visit him soon as he has not seen him in a while.
Slip Slidin' Away • Lil' Penguin Lost • Big Penguin Race • Frosty Slide for 8 Red Coins • Snowman's Lost His Head • Wall Kicks Will Work (N64)/Mario's Super Wall Kick (DS) • Switch Star of Cool, Cool Mountain (DS)
Big Boo's Haunt
Go on a Ghost Hunt • Ride Big Boo's Merry Go Round • Secret of the Haunted Books • Seek the 8 Red Coins • Big Boo's Balcony • Eye to Eye in the Secret Room • Switch Star of the Basement
Hazy Maze Cave
Swimming Beast in the Cavern • Elevate for 8 Red Coins • Metal-Head Mario Can Move! (N64)/Metal-Head Wario Can Move (DS) • Navigating the Toxic Maze • A-Maze-Ing Emergency Exit • Watch for Rolling Rocks • Underground Switch Star
In the Talons of the Big Bird • Shining Atop the Pyramid • Inside the Ancient Pyramid • Stand Tall On the Four Pillars • Free Flying For 8 Red Coins (5th Star, N64) (7th Star, DS) • Tox Box Switch Star (DS) • Pyramid Puzzle
Snowman's Big Head • Chill with the Bully • In the Deep Freeze (N64) • Yoshi's Ice Sculpture (DS) • Whirl from the Freezing Pond • Shell Shreddin' for Red Coins (N64) • Snowman's Silver Star (DS) • Into the Igloo • Red Coins in the House (DS)
Wet-Dry World
Shocking Arrow Lifts! • Top o' the Town • Secrets in the Shallows and Sky (N64)/5 Secrets in the Shallows and Sky (DS) • Express Elevator--Hurry Up! • Go to Town for Red Coins (N64)/Go to Town for the Red Coins (DS) • Quick Race Through Downtown! • Soaked Silver Stars (DS)
Tall, Tall Mountain
Scale the Mountain • Mystery of the Monkey Cage • Scary 'Shrooms, Red Coins • Mysterious Mountainside • Breathtaking View from Bridge (Star 5, N64)/Breathtaking View from the Bridge (Star 7, DS) • Blast to the Lonely Mushroom (Star 6, N64) (Star 5, DS) • 5 Secrets of the Mountain
Roll into the Cage (N64) • Luigi in the Cage (DS) • The Pit and the Pendulums (N64) • The Pendulum Switch Star (DS) • Get a Hand • Stomp on the Thwomp •Timed Jumps on Moving Bars • Stop Time for Red Coins • Tick Tock Silver Stars
Rainbow Ride
Cruiser Crossing the Rainbow • The Big House in the Sky • Coins Amassed in a Maze • Swingin' in the Breeze • Tricky Triangles! • Somewhere over the Rainbow • Switch Star of the Manor
Bob-omb Sudden Death • Bob-omb Trampoline • Jumping Sudden Death • Jumping Brothers • Lakitu Launch • Vs. Mario's Slides • Vs. Pair-a-Gone • Vs. Trampoline Time
