Other mistake: When Don and Dr Smith are stealing Sesmar's control unit, look closely at the base of the electronic arch - Raddion is hidden from sight but the careful eye will see his golden feet.
Carmelita Is One of Us - S3-E25
Continuity mistake: In full shots of Kelly holding the baby, it is entirely covered by the pink blanket. But in close-ups, the blanket is pulled back to completely expose the baby's head. (00:17:00)
Urutora sakusen dai ichi gô - S1-E2
Revealing mistake: When Bemular and Ultraman wrestle by the river, evidently the stunt double's arm couldn't fit inside the Bemular's T-rex arms, because they are entirely lifeless and instead of 'wrestling', the scene is basically Ultraman rolling around hugging a big rubber log. (00:21:10)