Other mistake: On the "Mario's Greatest Movie Moments" DVD of this series, from the main menu, go into the trivia game. The fifth question asks you about the Super Mario Bros. Super Show episode 'Count Koopula.' It asks you "What's room number that the Mario Bros. were put into in Koopula's Castle?" It's supposed to say "What's THE room number that the Mario Bros. were put into in Koopula's Castle?"
Other mistake: In many of the live-action segments, the Alarmtron logo on the alarm in the Mario Bros' residence has been partially covered to read "Acarmtron" instead. In addition, in several episodes, the phone number for Alarmtron is also partially covered.
Other mistake: In the theme song, there's a part where Mario touches a star and gets fire power. The star is suppose to give hyper power, it's suppose to be a flower to give him fire power.
King Mario of Cramalot - S1-E2
Other mistake: When Mario cuts the net, the back of the net is missing, and when he jumps out of it, it overlaps on him. The net disappears shortly after. (00:09:27)
King Mario of Cramalot - S1-E2
Other mistake: When King Koopa is escaping into a Warp Zone, the background in the portal is the same as Cramalot Castle. (00:17:36)
Other mistake: When Mario, Luigi and Toad are speeding to get to the rebel fort, Toad tells Mario to look out the car's rear-view mirror. However, the car doesn't have one. (00:18:15)
Other mistake: Koopa's army tries to stop the Marios from getting to the rebel fort by driving a truck and stopping it in the middle of the road. However, nobody is driving the truck. (00:18:25)
The Adventures of Sherlock Mario - S1-E18
Other mistake: When Professor Koopa-arity and his minions infiltrate the Tower of Victoria, a line appears on Professor Koopa-arity. (00:08:07)
Mario meets Koop-Zilla - S1-E28
Other mistake: When Luigi asks how he and Mario are going to escape Koop-zilla, the strap on his goggles is missing, and shortly after, they completely disappear. (00:10:02)
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)
Other mistake: When Toad mentions that when the general store is destroyed, he and his friends will be eaten, the general store is stationary despite the crocodiles chomping the building down. This also happens when Princess Toadstool hopes that Mario and Luigi will bring the statue. (00:06:45 - 00:09:36)
Robo Koopa - S1-E52
Other mistake: Mario has vanished when Luigi says "Koopa was scary enough when he was a reptile." (00:01:40)
Robo Koopa - S1-E52
Other mistake: In a wide shot of the Mario brothers dashing from Koopa, they run over an open hole, though nobody falls into it. (00:01:50)
Robo Koopa - S1-E52
Other mistake: When Koopa's controls are messed up by Bunsun, an explosive shoots out one of Koopa's toes, destroying a nearby structure. In the next shot, bullet bills are being fired out of his toes. (00:02:55)
Robo Koopa - S1-E52
Other mistake: Near the end, Dr. Nerdnik tricks Robo Koopa into pushing the red ejector seat button on his suit by saying it will run out of fuel unless he pushes the button. He pushes one of the white buttons, yet he ejects anyway. (00:12:10)
