Continuity mistake: In Season 2 Episode 22, Model Behavior, Woody has gotten his braces off. However, in this episode, he has braces back on again.
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?
Triumvirate of Terror! - S3-E8
Continuity mistake: After Joker subdues the other Amazonians, he is disguised as a female warrior and talks to Wonder Woman and her mother. There are no Amazonians knocked out in front of Joker and one is beside him with her head behind him. But in the reverse angle, that one has vanished and there is suddenly another Amazonian adjacent in front of Joker with her body in a different position. (00:11:10)
Iron Forged in Fire: Part One - S1-E1
Continuity mistake: In Obadiah Stane’s new office of Stark International, Tony goes to see him. Just after Tony begins speaking, Stane interrupts him and waves his arm around. The arm of his shadow is right next to the shadow of his chair and overlaps. But when it cuts to a frontal view of Stane, the shadow’s change around, and there is a lot of light between the shadow of his arm and the shadow of his chair. (00:08:15)
Continuity mistake: When Wolverine opens the door as Emma Frost is there, he is standing roughly two steps away from her. When he asks her why she's there, he takes a couple steps towards her and still only manages to be roughly the same distance away from her as he started. (00:02:17)