Other mistake: Nicole is through a window of the house in the scene when Darwin asked "Which one is the real Gumball?" This is probably from the episode "The Goons." (00:00:05)
Other mistake: In "The Picnic", Darwin and Gumball bite into a rock. They each bite the rock with only two teeth each, but every one of their teeth cracks.
Other mistake: When Gumball tries to comfort Alan, Alan opens the door but Alan is a balloon, with no hands to open a door. (00:04:35)
Other mistake: Penny's hand is smaller than her eye, but manages to completely cover it.
