Other mistake: The battle droids - including the commando droids featured here - habitually have two broad fingers and a thumb. So how can a commando droid squeeze itself completely into clone trooper armor without its broad fingers tearing open the gloves, since it can't separate its fingers?
Land of Hold/Penny Henny - S2-E17
Deliberate mistake: When Garfield brings Jon to the broken TV, the scene's animation is still unrendered. (00:01:04)
Bat Mitzvah Crashers/Super Secret Weakness - S1-E5
Continuity mistake: In "Li'l Orphan Happy" when Ben makes his mom the tuna salad, it has lettuce around it, but in the close-up the lettuce disappears. When it gets zoomed-out on, the lettuce is back.
Triumvirate of Terror! - S3-E8
Continuity mistake: When the camera first shows Jimmy, he says "Where the heck have you been" and looks up to his left then straight forward. The shot changes to a close up and suddenly he is looking up to his right. (00:00:15)
Iron Forged in Fire: Part One - S1-E1
Continuity mistake: After the plane explosion, a scene six months later is shown with Tony lying in bed with his chest piece now in that keeps him alive. The first shot shows it with some wire or designs of some sort protruding around it along his chest. Some of the ends overlap with the border of the central round piece. It then cuts to a closer view of the device as Tony’s alarm sounds, and suddenly the pieces do not overlap the circle at all, and some of them slightly change shape and position. (00:06:35)
Other mistake: When Beast is flipping through his notes to try to determine what caused the explosion at the mansion a year earlier, you can see all the pages are blank. (00:13:50)