After Juni wins the Mega Race, he stands up on his "hubcap," but in the next shot you see Juni flip the hubcap up like a skateboard. Juni never moved, but all of a sudden he's off the hubcap.
When Gerty and Juni are talking in the tree house, Gerty is drinking a cup of apple juice. When she is done, she wipes her mouth with a green napkin and puts it down. In the next shot, the napkin is still on her mouth and she puts the napkin down for the second time.
After Juni enters the Robocon arena, he steps on an elevator. He stands off-center, but in the next shot from above he is standing in the center of the elevator.
In the moon scenes, the position of the Earth relative to the characters changes between shots.
When battling the giant robots in downtown Austin they are on Congress Avenue facing north towards the capitol building, but when the giant Toymaker robot arrives they are on the other side of the capitol building looking south.
At the end of the movie, when Dinky Winks waves his branding iron at the camera, it spells D-I-N-K-Y. This means that his name would end up branded onto the robot backwards--if it's even possible to brand a robot, of course.
After the group falls into the "lava," Carmen is signaling Juni where to go. She's holding her breath at first, then smiles at Juni, which would release all the air she was holding. She then goes back to "holding her breath."
Not true. It is possible to smile and even open your mouth whilst still holding your breath.
Not true. It is possible to smile and even open your mouth whilst still holding your breath.
Towards the beginning of the movie, Toymaker throws the metal bird at his computer 'minion' and it goes through him. Later, he slaps him and it is as if he is real.
Right before the "mega race" starts, one of the "beta tester" kids turns around to the audience as if he were addressing Juni and says "we'll try to help you out as much as we can" but the vehicle that Juni is driving is clearly visible in front of him as he says it.
There are tourists (or other foot traffic) in the area of the (Texas State) capitol that were not affected by the "Big Battle" going on in Congress Avenue.
During the 'Mega Race' one person throws another off his bike, but when he hits the tarmac, he seems to disappear.
When Grandpa reaches to pick up the two programmers, the towers in the bottom left corner for some reason change abruptly, and so do the two actors.
Little Dink doesn't have a pair of 3D glasses and therefore shouldn't have been able to see the giant robots during the final battle at the end of the movie.
When Juni and the others meet Carmen at Level 4, Arnold is absent when they cross a bridge toward Lava Mountain.
Rez says the reason they found Juni on level one was that François was caught cheating in the mega race. However, when the boys get to the mega race in Level 2, a character says that there are no rules in the mega race.
Near the end of the movie, Carmen tells Romero that they only have one pair of glasses left. This can't be true, as Carmen gives Gary glasses when he arrives and Gerti is also wearing glasses, so we can assume that Juni gave them to her.