Continuity mistake: After Mario and Luigi pick up their weapons, they can still be seen on the ground. (00:11:39)
Continuity mistake: When Mario says that Karate Koopa is finished, he is not holding anything, but in the next shot, he has his staff. (00:15:41)
Revealing mistake: When Mario and his friends laugh at the end of the episode, Mario appears to be standing in midair. (00:16:54)
Revealing mistake: When Karate Koopa catches Princess Toadstool and Toad trying to escape, his legs and part of Princess Toadstool's dress are cut off for a few frames. (00:13:49)
Continuity mistake: When Luigi swings his nunchucks a second time, his sideburns disappear. (00:12:40)
Revealing mistake: When Mario and his friends kick the Ninjis when being surrounded by them, one freezes in midair while another duplicates itself. (00:12:48)
Continuity mistake: When Misaki says that fear never enters the vocabulary of someone training to be a martial arts expert, Mario and Luigi's gloves disappear. This also happens when Misaki says he will award them black belts. (00:06:24 - 00:16:23)
Other mistake: When Luigi takes the washer from Misaki, his hand is behind it, but he is still able to get it. (00:07:49)
