Continuity mistake: In the pursuit at the beginning of the movie, you can see on the navigation screen that Mr. Incredible has passed Adeline St. When he's going to place his supersuit, he looks at the screen and he hasn't passed this street yet. (00:02:35)
Continuity mistake: When Mr. Incredible saves the man that jumped from the building, their position changes between shots when they breaks the window. From behind, the man is bent over Mr. Incredible's shoulders but in the next shot, he's on his chest. The second shot happens at the same time, so it's impossible for them to be in two different positions. (00:06:10)
Continuity mistake: When Mr. Incredible lands on the train tracks after trying to get the bomb off Syndrome that Bomb Voyage puts on him, underneath the tracks in the first shot there is no traffic but in the next shot when the train is coming, the shot zooms out and traffic just magically appears out of nowhere. (00:08:07)
Continuity mistake: After the bomb explodes on the tramway track, Mr. Incredible is further away from the broken part when he stands up. It is most noticeable by the broken rails at his left. (00:08:25)
Continuity mistake: Watch the street during the sequence where the railway explodes, starting when Mr. Incredible falls until the moment he stops the train: The number of cars parked on the street magically changes (a lot) between shots. (00:08:30)
Continuity mistake: In the scene where Hugh is coming into Bob's office, you can see, as he is coming in, that the glass separating Mr. Incredible's cubicle from the hallway has two seperate openings. This is visible both immediately before and immediately after Mr. Hugh walks through the doorway. In all other shots, however, The glass is one continuous pane. (00:13:05)
Continuity mistake: When Bob is in his cubicle before Mr. Huff shows, the pencil holder is on the left side of the desk, next to the computer. When Bob jumps up, but before the pencil holder's knocked down, it's in the middle of the desk. Then when he picks it up it's closer to the phone, but still in the middle of the desk. As Mr. Huff turns to leave, it's still there. But when the camera cuts to an overhead shot, the pencil holder's jumped to the opposite side of the phone, perched on the edge of the desk, where it falls to the floor. (00:13:15)
Continuity mistake: When Helen and Vi are talking at the dinner table, Vi's fork changes position a few times between shots. (00:17:40)
Continuity mistake: After the dinner table scene, Bob leaves to go out with Frozone. Then Helen turns to talk to Dash. In the first shot, on Dash's plate all the brocoli pieces sit around the steak. Then the shot changes, a brocoli piece is suddenly sitting atop the piece of steak. (00:19:20 - 00:20:15)
Continuity mistake: When Mr. I and Frozone are in the jewelry store, and Frozone goes to the water cooler to get a drink, you can see the handle is in a vertical position. When he has finished and leaves it, the handle stays in a horizontal position. (00:22:35)
Continuity mistake: When Bob stands up in the jewelry store, he is right next to a jewel display. When the alarm rings, he's almost two meters away from it. He didn't have the time to move. (00:23:10)
Continuity mistake: After Bob gets back home from "re-living the glory days", you can see a barbecue in the back yard and it is on the cement deck. But at the end of the scene, when the camera shows an aerial view of the house, the barbecue is on the grass. (00:24:40 - 00:26:50)
Continuity mistake: The objects on the table keeps changing place while Bob is taking notes of Mirage's message. The most noticeable is the piece of paper with a "i" on it. (00:32:25)
Continuity mistake: When Mr. Incredible lands on the island, he gets stuck in his capsule, eventually smashing it to get out. He starts stretching, bending backwards. The angle lowers to show that Mr. Incredible's suit is now a two-piece, revealing his fat stomach. During the rest of the movie, the suit is a one-piece, so this wouldn't be possible. (00:35:15)
Continuity mistake: When Mr. Incredible and Mirage are having dinner next to the wall of fire, the long shot shows them at opposite ends of a very long table. All of the following close up shots of Mirage, shown over Mr. Incredible's shoulder, show them as being much closer together, at a much smaller table. (00:40:50)
Continuity mistake: When Mr. Incredible is packing his suitcase just before he goes to Edna's to fix his old supersuit, the formal suit is blue, but later on just before he leaves and Helen tells him, "Have a great day honey" his formal suit turns black. (00:42:48)
Continuity mistake: When Helen and Edna go into her lab and sit down at the "viewing" table, E sets the pitcher down on her side of the table. A couple of shots later the pitcher is on Helen's side of the table. Also, when the table moved back really fast, the items on the table would become misplaced, but they remained stationary. (00:55:05)
Continuity mistake: When Helen is going to place the supersuits in her luggage, there is a few centimeters between the one that she grabs and the others but they are much closer in the next shot. (01:03:55)
Continuity mistake: When Helen opens the luggage on the airplane, the zipper's handle keeps switching side. (01:05:25)
Continuity mistake: When Dash and Violet wake up on the island, there's a section of rock wall right behind them. The bird asks for ID, Dash wakes Violet up to show her, and she steps forward. The camera switches positions a few times, then the kids turn around and run for it. Before they turn, the rock wall is on the left and there's a clearing to the right- but the complete 180 they make doesn't warrant enough space for them to go around the rock wall- actually, when they turn to run the rock wall is not only farther away from them, it's already behind them. (01:22:00)
Answer: IMDb just says additional voices, nothing specific.
Shannon Jackson