Urutora sakusen dai ichi gô - S1-E2
Revealing mistake: The VTOL hits Bemular with two missiles the second time that Hayata makes him come out of the water. The second missile causes an explosion with the special effect applied in the wrong spot, a spot in the back of the monster that is practically the opposite of the direction in the line of shot. (00:17:50)
Urutora sakusen dai ichi gô - S1-E2
Revealing mistake: When Bemular drops the submarine, this does not fall in a plausible trajectory but it is yanked away mid-fall with a string by someone off-screen. (00:19:15)
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)
Urutora sakusen dai ichi gô - S1-E2
Revealing mistake: When Bemular shoots his beam at Ultraman, the special effect actually does superimpose over part of Ultraman's leg as if he were hit, which is not what happens. (00:22:05)
Revealing mistake: During his first confrontation with the alien, Hayata's pistol shoots powerful rays that don't cause a single speck of damage to the walls when the monster dodges them. They are just superimposed. (00:09:40)
Revealing mistake: When the monster uses its claw to swat Hayata away, under the superimposed claw you can see the abrupt disappearance of Hayata's shadow from one frame to the next. (00:19:30)
Revealing mistake: When the monster is revealed behind a column as the troops enter the building and it splits in two mirror images, they did not stop the clock in the background, which reveals whenever they stopped filming to change things in frame.
Revealing mistake: The victims of the stasis ray in the episode try to hold still as much as possible...with varying° of success.
Revealing mistake: When Ultraman finally confronts the fake Ultraman (Zarab), one of the shots shows the two Ultramans rotating around, followed by a right-hand punch right to the fake's left neck. At the end of the shot, the suit actor can be seen wagging his right arm in mid-air, possibly hitting the neck too hard. What's even noticeable is that parts of the silver paint on the right glove fall off. (00:23:34)