Monsters, Inc.

Continuity mistake: At the start of the workday, Randall opens the first door with the knob on the left and hinges on the right. When he comes back out, the knob is on the right and the hinges are on the left. (00:14:45)

Continuity mistake: When Mike and Sully are in the ice cave, and Mike is starting to throw the a Snowball before Sully says, "None of it matters anymore" the snowball turns from yellow to white for a few seconds, and then back to yellow.

Continuity mistake: During the scene on the scare floor, there is a world map above the entrance. To the right of the map are two signs that read STAND BY and SCARE. In some shots, the signs change from written words, to symbols of a monster standing still (STAND BY) and roaring (SCARE). This only occurs in the international version.

Continuity mistake: When Randall catches Mike and tells him that he has half an hour to put Boo in her door he also says the door will be in his station. Later we see that the door is on station 5. But on the first day Mike and Sully are working on station 5 and Randall is on station 6.

Continuity mistake: Before going to the Scare Floor, Mike goes to get his paperwork from Roz. The paperwork first faces 5 o'clock direction. A few shots later, the papers suddenly face a 12 o'clock direction. (00:11:25)

Casual Person

Monsters, Inc. mistake picture

Factual error: The map of the world on the scare floor shows Australia without Tasmania. This is best seen late in the movie after Boo has returned home, Sully is now management and when Mike asks him to follow him you can clearly see the world map behind Sully showing Australia and no Tasmania. (01:23:30)

Continuity mistake: When Mike, Sulley and Boo are walking to the Scare Floor after leaving the locker room, Mike's feet and legs are soaking wet. His feet are suddenly dry by the time they reach the Scare Floor. (00:38:45)

Casual Person

Upvote valid corrections to help move entries into the corrections section.

Suggested correction: You can see the wet footprints gradually becoming less wet as he walks, until they leave no water footprints.

Yes the soles of his feet were dry, not the entire foot though.

Ssiscool Premium member

Continuity mistake: When Sulley believes Boo is in the trash compactor, a cube of garbage comes out. In the first shot of the cube, the light used to make the "eye" is seen sticking out. Then as the conveyor belt stops, the light is now laid down on the cube. (00:44:20)

Casual Person

Continuity mistake: Boo shows a drawing of Randall. First, it's held in a portrait position, then in the reverse angle, it is now held in a landscape position. Then back to portrait position in the next shot. (00:31:30)

Casual Person

Audio problem: When Mike and Sulley walk through Monstropolis, Mike goes to his car. An automatic unlocking sound from the car, but the keys Mike is shown holding appear to be the keys one would use to manually unlock the door. (00:07:20)

Casual Person

Upvote valid corrections to help move entries into the corrections section.

Suggested correction: Monstropolis is shown to have many things that operate differently from the real world. It isn't such a stretch to consider that car keys work differently as well.

Continuity mistake: Waternoose grabs a scream can and starts releasing all the energy and the red line starts to go down. There are white lines over sections of the can. When he begins to release the energy, right at the very end of the first shot, the red line that goes down has not yet reached the first white line. In the very next shot, the red line has suddenly passed the white line.

Casual Person

Continuity mistake: After Mike sprays his eye with the disinfectant it goes red, but just after he snatches the doll from Boo, his eye is fine again, and then goes back to being red for the rest of the scene.


Continuity mistake: When Sully and Mike are talking in front of the Abominable Snowman, and Mike starts throwing the snow cones at Sully, we see the snowman covering one of the snowcone holes with his thumb, while from a different angle it seems as though his thumb is between the two holes and the hole that he had just covered has an empty snowcone wrapper in it. (01:00:35)

Monsters, Inc. mistake picture

Continuity mistake: The scare chart shows a picture of the scarer and the number totals. In the shot that shows Mike repeatedly taking out tanks whilst Sulley is scaring the child, the names of the people have suddenly appeared next to the pictures of the scarers that weren't even there in previous or following shots. This only happens in the international version.

Casual Person

Continuity mistake: When a green monster named Frank was walking out of Monsters, Inc. on the second day, take a look at what's behind the door - It only shows passages to scare floors, but when Mike and Sulley (holding Boo in costume) walk in, the CDA is all over the place. (00:35:05)

Continuity mistake: Near the end of the movie when Waternoose "calls" for Boo's door along with the CDA, it arrives into the factory on the "outgoing" door track.

Continuity mistake: There is a purple chair and a green chair in Mike and Sulley's apartment. The green chair disappears when they are at the apartment with Boo later. (00:05:45 - 00:27:50)

Casual Person

Upvote valid corrections to help move entries into the corrections section.

Suggested correction: Didn't they use the chairs fabric to make Boo's disguise? The chair would have been ruined.

They only used Sulley's chair to make a costume for Boo. Mike has his own chair but we are never shown as to where he keeps the chair. He may have put the chair somewhere else in the apartment so Boo wouldn't her germs all over it.

Monsters, Inc. mistake picture

Continuity mistake: When George comes out of the door with the kid's sock stuck to him the sock's toe points inward toward the middle of his back. When the CDA rushes in to remove it the sock toe faces outward. (00:17:40 - 00:18:25)

Factual error: After Mike rebuilds Boo's door, it shows a few crack lines but is otherwise intact. But the shredder created a lot of sawdust so it would be impossible to rebuild the door using only the wood pieces. (01:20:00 - 01:24:10)

Continuity mistake: In the scene where Mike and Sully are in the locker room after a day of scaring, discussing plans for the evening, George Sanderson's assistant is seen in the lower left side of the screen, having difficulties removing his helmet. In the scene immediately after, Mike and Sully are walking down a large hallway that leads to the Monsters Inc. main lobby. George's assistant is seen in the background in the hallway, wearing his helmet. Even in the shot where Roz is inquiring about Mike's paperwork in the lobby, the assistant is still seen crossing the lobby in the background, wearing his helmet.

Henry J. Waternoose: There's nothing more toxic or deadly than a human child. A single touch could kill you. Leave a door open, and one can walk right into this factory; right into the monster world.
Trainee: I won't go into a kid's room. You can't make me.
Henry J. Waternoose: You're going in there, because we need this. Our city is counting on you to collect those screams. Without scream, we have no power. Yes, it's dangerous work, and that's why I need you to be at your best. I need scarers who are confident, tenacious, tough, intimidating. I need scarers like... like... James P. Sullivan.

More quotes from Monsters, Inc.
Monsters, Inc. trivia picture

Trivia: Boo's real name is Mary, the same as the young girl, Mary Gibbs, who voices Boo. This is only just visible on one of the drawings Boo makes in Mike and Sulley's apartment.


More trivia for Monsters, Inc.

Question: After Monsters, Inc. has switched over to "laugh power", the scare floor has a very different look. There's a board in the back with "JOKE OF THE DAY" written on it. Can anyone see the text of the joke?

Answer: The Doctor says to the patient, "What seems to be the problem?" The patient lifts his arm and says "It hurts when I do this." The Doctor says "don't do that."

More questions & answers from Monsters, Inc.

Join the mailing list

Separate from membership, this is to get updates about mistakes in recent releases. Addresses are not passed on to any third party, and are used solely for direct communication from this site. You can unsubscribe at any time.

Check out the mistake & trivia books, on Kindle and in paperback.