The Microwave/The Meddler - S1-E17
Continuity mistake: In "The Meddler", Nicole is feeding Gumball food with a spoon and drops it on the table. The camera cuts to Darwin and then back, but the spoon is now gone.
Continuity mistake: When Gumball enters the tent of sweaty cheese, he is covered in slime. When he comes out, he is clean.
Continuity mistake: When Gumball and Darwin board the bus, the bus driver pulls out an axe and the boys ask what it's for. The driver says he uses it to push the pedals and he is still holding it. In two shots, the axe has vanished.
Continuity mistake: The Kids are playing cards on the floor, with some cards in their hands and in a pile on the floor. Right before The Kids stop playing, the cards on the floor disappear.
Continuity mistake: Penny is looking next to the corner of a wall next to some lockers. In the next shot, she is now next to her locker, which is not that close to the corner she was just standing next to.
Continuity mistake: Nicole arrives in front of The Pest control bug and steps out of the car. In the next shot, she is suddenly over the barrier, even though she did not previously step over anything.
Continuity mistake: Gumball enters a bathroom where Banana Joe's father is taking a bath. At first there is nothing behind Banana Joe's father. In the next shot, two bottles of shampoo appear behind him. In the next shot, the bottles disappear again.
Continuity mistake: Gumball pokes his tongue through a newspaper that Darwin was holding. In a few shots, the newspaper disappears.
The Allergy - S3-E16
Continuity mistake: The school nurse drops a pencil right next to herself. The pencil disappears in two shots.
Continuity mistake: A man breaks through the windshield of his car, spreading glass shards everywhere. In a few shots, The Man is still on the ground, but the glass shards have disappeared.
Continuity mistake: Gumball and Darwin are standing next to an open locker next to Tobias. The camera cuts to Tobias, and then back to the boys, but the locker is now closed.
Continuity mistake: Gumball and Darwin break through Mr. Robinson's fence, leaving some scattered pieces. In a few shots, the pieces are gone.
Continuity mistake: In "The Robot", There is a stuffed animal next to Darwin. In a few shots, the stuffed animal moves further away from Darwin by itself.
Continuity mistake: In "The Robot", Gumball and Darwin are playing with stuffed animals, which they set off to the side. Many shots later, the stuffed animals disappear.
Continuity mistake: In "The Robot", Bobert shoots a laser, creating a hole in the ground. In two shots, the hole disappears.
Continuity mistake: In "The Robot", Bobert throws a pair of dice into the grass. The dice disappear in the next shot.
Continuity mistake: In "The Refund", Richard places a game on the counter in front of Larry, with the picture on the game closer to Richard. In the next shot, the game flips itself, and now the picture is closer to Larry.
Continuity mistake: In "The Gi", Nicole pulls a cord out of the wall and puts it on the ground. In a few shots, the cord is gone.
Continuity mistake: In "The Gi", Gumball and Darwin are training outside with large boombox. Later, through a window, the boombox has shrunk noticeably.
Continuity mistake: In "The Gi", There is a mailbox in front of the Watterson household. Later, when Gumball and Darwin are training in the front yard, the mailbox is gone.
