Iron Forged in Fire: Part One - S1-E1
Continuity mistake: As Rhodey and Tony are walking by a building, Rhodey tells Tony to not worry, as in two years he can fire Stane. The first view shows their shadows directly under them, like the sun is at its zenith. It then cuts to a shot from above their heads and now their shadows are elongated and cast on the wall beside them. (00:09:35)
Triumvirate of Terror! - S3-E8
Continuity mistake: When Joker zaps Wonder Woman and her mother, they are both standing in front of their thrones and fall forwards. But when Wonder Woman stands back up, her mother, still unconscious, is suddenly off to the side and behind the thrones. (00:11:35)
The Citadel - S3-E18
Continuity mistake: When Ahsoka asks Master Plo if she can speak with him, her Padawan braid (the beaded chain hanging on the back of her head below her right horn) is missing. (00:04:05)
Continuity mistake: After Cyclops blasts Wolverine out of his hotel room and Wolverine says "Good talk," the half of Wolverine's necklace with his dog tag that is supposed to be draped over his left side is missing. (00:10:55)