Revealing mistake: After Helen finds the hair on Bob's suit, she goes to him while he is in the car and says," Have a great trip. I love you, so much.", Bob backs the car out of the driveway. He backs out and turns, but you can see his hand on the top of the steering wheel doesn't move. (00:47:05)
Revealing mistake: When The Incredibles and Frozone are about to fire the robot's rocket claw, Helen turns off the rocket with the first button on the remote (round button). When she fires the rocket, she turns it back on with the last button on the remote.
Answer: IMDb just says additional voices, nothing specific.
Shannon Jackson