Other mistake: King Koopa is able to stick himself out of one of the windows on the Doomship, despite it being closed. (00:08:52)
Other mistake: When Mario and Princess Toadstool enter the dungeon, the hatch they enter through briefly appears closed, but they still enter it regardless. (00:04:16)
Super Koopa - S1-E26
Other mistake: Throughout the episode, Paris's sky is the same as the Mushroom Kingdom's.
Other mistake: When Mario asks if Luigi feels how he feels, Luigi's eyelid is not coloured in. (00:03:57)
Other mistake: Throughout the episode, Brooklyn's sky is the same as the Mushroom Kingdom's.
7 Continents for 7 Koopas - S1-E22
Other mistake: When the Koopa Klogger is destroyed, the background is that of the Mushroom Kingdom instead of the real world. In the same shot, a blue parachute falls to the ground, but when Princess Toadstool picks it up, it turns brown. (00:09:25)
Other mistake: When Emperor Ed falls out of the Doomship, he falls through a closed window. (00:02:49)
Life's Ruff - S1-E20
Other mistake: Despite Hip peeking from the girder, he cannot be seen behind them. This also happens to Hop shortly after when they are pulling the astronauts behind there. (00:09:06)
Life's Ruff - S1-E20
Other mistake: When Hip tosses the wand to Hop, part of the background is coloured in like Hop's head. (00:02:43)
Crimes R Us - S1-E19
Other mistake: When the Mario Bros. are suspicious of Clyde, the background is the treasury instead of the dungeon. (00:10:25)
Crimes R Us - S1-E19
Other mistake: After the Mario Bros. realise that they have to stop the bank robbery, two Cheatsys can be seen. (00:03:57)
Crimes R Us - S1-E19
Other mistake: When the Doomship attacks the prison, the sky is that of the Mushroom Kingdom instead of the real world. (00:01:15)
Mush-Rumors - S1-E17
Other mistake: When Bud says the shotry is amazing, the background appears to be moving backward. (00:01:24)
Misadventures in Babysitting - S1-E13
Other mistake: When Junior is thrown into the pipe, his shirt is drawn backwards. (00:06:48)
A Toadally Magical Adventure - S1-E14
Other mistake: When Bully uses the wand, the fence around Toad's house can still be normal-sized despite Kootie Pie having enlarged it. (00:08:32)
Other mistake: When the Doom Dancer starts heading towards King Koopa, and when it falls to the ground, it appears to be heading towards the floor of the Doomship instead. (00:10:53 - 00:11:30)
Other mistake: When Mario is breaking some Blocks to find some Super Leaves, some of them remain intact. (00:03:42)
Sneaky Lying Cheating Giant Ninja Koopas - S1-E2
Other mistake: When Princess Toadstool changes Mario back to normal, Mario's cap can be seen before he transforms. (00:10:42)
Sneaky Lying Cheating Giant Ninja Koopas - S1-E2
Other mistake: When Cheatsy and Kooky suggest the kingdoms the Koopalings should take over next, their nostrils disappear. (00:08:18)
Other mistake: In several shots during the match, the wrestlers appear to be outside of the ring, but the ropes make them appear as though they are inside it. (00:08:07 - 00:11:00)
