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: Right at the beginning, the camera closes in on a baseball field. It shows several people standing and walking out in the field and just two standing up by home plate. The view changes to behind home plate and suddenly there are several superheroes sitting and stretching there, and the rest of the field is empty. Then after a shot of Jimmy Olson in the commentator stand, it shows a high view of the field again and the people have all changed again. (00:00:10)
Iron Forged in Fire: Part One - S1-E1
Continuity mistake: Tony walks by some people in the Stark Lounge, and from a high angle their shadows are seen. The shadows are very close to the people’s feet, showing the light source is almost totally overhead. A couple shots later, you see behind Tony as he is walking, the same people in almost the same spot, with their shadows extended out further, as if the light source has moved several feet in front of them, but while they are still inside the building. (00:02:00)
Other mistake: When Rogue is confronted by the Brotherhood after she absorbs Toad's powers, the Blob somehow walks up right behind her and only made two audible footsteps. The street Rogue was walking down was long, and Blob wasn't in view behind her a couple of shots before. Even if he emerged from an alley, he is so heavy that more than two of his footsteps would have been audible. (00:08:41)