Monsters, Inc.
Monsters, Inc. mistake picture

Continuity mistake: When Sulley places the menu on the table he puts it face down (logo first), then when he lifts up the table, to quickly get Boo, the menu is face up. (00:26:05)

Monsters, Inc. mistake picture

Continuity mistake: When Mike is bringing Sully to the fixed door he has no slivers or band-aids on his hands, then when he says "it was a lot of wood to go through" you see he does. (01:24:10)

Monsters, Inc. mistake picture

Other mistake: Near the end of the film, when the identity of 0001 of the CDA is revealed, number 0112 is shown both standing next to 0001 as Roz enters the room and behind Sully and Mike on the opposite side of the room. (01:16:45)

Continuity mistake: After the Scare Floor shuts down at 6:00 and Sulley goes back to do Mike's paperwork, the clock reads 5:48. After he returns again to put Boo back, it clearly shows 5:48. Finally, after Randall leaves and Sulley leaves the Scare Floor for the restaurant, the clock reads 6:48. (00:22:06)

Deliberate mistake: When Boo laughs repeatedly while playing hide-n-seek with Sully in the men's room, nothing happens to the electricity - no surges as with all other times she laughs. [In the audio commentary by the directors, they explained that it would've been distracting if an energy surge occurred every time Boo laughed, so they simply didn't address the issue. A reasonable course of action, but still a mistake.] (00:37:30)

Continuity mistake: At the start, when the simulation is terminated, as Phlegm pulls a jack off his back, the large checkered rug at the foot of the bed is gone. It should be seen on the floor in front of him, in this shot facing the wall as it goes up.

Super Grover Premium member
Monsters, Inc. mistake picture

Continuity mistake: In the opening scene, on the floor there is a toy train on circular tracks when the monster sneaks in. When the monster trips backwards over the ball and skateboard then falls onto the jacks, the train and tracks are gone. (00:01:49)

Other mistake: When Sulley and Mike take Boo into the Factory, they see all of the CDA agents. There are 3 talking to Mr. Waternoose(as we see seconds later). One of them is number 00002. When they are done, they escort Mr. Waternoose to somewhere else. However at that very second another agent comes in with a metal detector thing. His number is also 00002. (00:35:20 - 00:36:10)

Other mistake: In the scene where Mike and Sully walk in on the CDA overrunning the power company, there is a CDA agent with number 00112 behind the main desk, and another with the same number talking to the boss a second later. (00:35:10)

Monsters, Inc. mistake picture

Continuity mistake: At the beginning when you see the monster in the testing room from under the bed with the glowing eyes, you also see the soccer ball on the left side of the screen. This shot takes place on the side of the bed. After the monster gets scared, he backs up kicks the soccer ball, but it is now at the foot of the bed in the middle of the room. (00:02:35)

Monsters, Inc. mistake picture

Continuity mistake: At the beginning of the film, we see Sully asleep in his bed and the alarm clock/radio on a bedside cabinet to the right. Later, when Boo climbs into Sully's bed, the clock/radio isn't there anymore. (00:04:50 - 00:32:30)

Audio problem: When we see Mike during the slumber party, we hear seven bells ring for the seven filled cylinders, but there are only six cylinder-filling noises. (00:16:50)

Continuity mistake: At the beginning when the monsters are at the testing room, you can see the boy in the bed seeing something opening the cabinet. He closes his eyes and opens them up again to see a sweater sticking out. But when another monster sees what he does wrong on the tape, the sweater isn't sticking out anymore. (00:03:40)

Continuity mistake: When Boo is in Mike and Sully's house, there's a "jazz" poster on the wall near the door, but when Boo is crying, it's gone.

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

Continuity mistake: When Mike takes the toilet paper off his feet, it's lying on the floor in the hallway. But when his girlfriend comes and yells to him, it's gone.

Continuity mistake: In Sully's bed, Boo is afraid of the closet, and there are many drawings in the bed, but when she shows the drawing of Randall, the others are gone. They come back when she goes to sleep.

Continuity mistake: After Boo falls asleep, when Sully says, "Hey Mike this might sound strange, but I don't think that kid's dangerous," Mike adjusts the lamp on the desk making the right bulb lower than the left. Next shot, as Mike turns, the right bulb is now higher than the left.

Super Grover Premium member

Continuity mistake: During the ending credits, they show Mike and Sulley redoing their "musical" number in front of all the monsters on the scream floor. During this Sulley blocks Boo out of the way by pushing her behind him. But when Sulley starts to dance, Boo has disappeared. (01:28:50)

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)

Factual error: In the scene where Waternoose and Sully are talking, Waternoose gets himself some "coffee", which is sludgy and thick and takes quite a while to pour from the machine. Seconds later, he takes a very quick sip. Since the liquid was so thick and there was little in the cup, it would be impossible for it to pour that fast.

Monsters, Inc. mistake picture

Other mistake: In the scaring simulation room, the alphabet wallpaper border at the top of the wall has the "J" written backwards.


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).

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.

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.

A Demon 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

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 picture of the scarer that weren't even there in previous or following shots.

Casual Person

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

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.

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.

Continuity mistake: When Sully and Mike are practising, their chairs are switched. Sully's is on the right Mike's is the left. When they sit to watch the commercial, they are switched back.


Plot hole: When Sully and Mike are talking in the toilets, during Boo and Sully's Hide and Seek game, Boo comes running in screaming and upset because she's just seen Randall, and he's not too far behind since all three can hear him talking offscreen to the CDA before entering the toilets, but how did Boo get to Sully faster than Randall without him seeing her, and how did Randall not hear her screams since they're all in the changing rooms which have an echo?

Character mistake: When Mike pulls out the first Scare Report, the word "yield" is spelled wrong.


Continuity mistake: When they go to the Scare Floor to put Boo back in her door, Mike swipes the card key and the numbers "240492" appear on screen. In the next shot, the numbers on screen are now "43496". (00:39:10)

Casual Person

Audio problem: When Mike and Sulley walk through Monstropolis, Mike goes to his car. You can hear an automatic unlock sound from the car, but Mike's keys are the type of key you would unlock a car with manually. (00:07:20)

Casual Person

Continuity mistake: When we first see Waternoose, he says a single touch of a child could kill them. A yellow guy throws his pencil and pad forwards out of his hands. When Waternoose walks over to the three people, the pencil and pad has moved to the right of the yellow guy without ever being touched.

Casual Person

Continuity mistake: In the apartment, Sulley leaves a trail of Kreature Krisp for Boo to follow. The first one he places is white, which becomes green in the next shot. It's obviously the same one in both shots because of its position in the doorway. (00:31:00)

Casual Person

Continuity mistake: Two people put an employee of the month picture of Mike and Sulley on the wall. The photo is noticeably crooked. In the shots of the two people talking to Mike and Sulley, the photo is correctly positioned without being touched.

Casual Person

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