Continuity mistake: At the end of the last series, Mario had brown hair, but in the opening shot of the intro, he has black hair. Also in this shot, the book on the table has the yellow rectangle on it five centimetres away from the top it, but in the next shot, it is three centimetres away. (00:00:03)
Continuity mistake: When first showing The Adventures of Super Mario Bros. 3 book in the opening, there is a green border around the yellow rectangle in the centre, but in the next shot, the green border disappears.
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When King Koopa says that Kootie Pie should tell him what she actually wants for her birthday, one of his fangs switches from white to pink several times. (00:01:03)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When King Koopa takes out his telescope, it is blue, but after he looks through it, it turns pink. (00:02:36)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When King Koopa tells the citizens to repeat after him, part of his underbelly switches from yellow to green a couple of times. (00:03:29)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When Luigi asks how they can help the US if they cannot help themselves, Mario and Toad are in front of Princess Toadstool, but in the next shot, they are behind her. (00:03:53)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When Mario is chomped by the Chain Chomp, it is on his left foot. But after Luigi says that he and his friends are triple-guarded, it is on his right. (00:03:54)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When Princess Toadstool asks a Fire Bro. if it is going to let a Boomerang Bro. get away with hitting it, the sides of its helmet change from white to black. In the same shot, its eyes change from yellow to white. (00:04:17)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When Princess Toadstool tells her friends to come over to where the fight is happening, the Fire Bros' cream snouts turn red like their bodies. (00:04:31)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When the Levitation Beam is first seen, the telescope on top of it is blue, but when King Koopa says that he finally found a gift that makes Kootie Pie happy, it turns pink. In the same shot, King Koopa's black pupils turn white. (00:04:58)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When the White House rises from the sea, the pipes on the sides disappear. (00:07:24)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: While Mario and Luigi are in their disguises, their helmets change from green to white several times. (00:07:54 - 00:08:45)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: When Luigi asks if the disguises will allow him and Mario to board King Koopa's Doomship, one of Mario's suspenders disappears. (00:07:57)
Reptiles in the Rose Garden - S1-E1
Continuity mistake: In this episode, Hop's sclerae are coloured blue instead of white.
Sneaky Lying Cheating Giant Ninja Koopas - S1-E2
Continuity mistake: When King Koopa calls for a family meeting, Bully and Kooky's cream snouts turn orange like their bodies. (00:00:45)
Sneaky Lying Cheating Giant Ninja Koopas - S1-E2
Continuity mistake: When King Koopa is walking over to the Goombas, the orange spikes on his shell and shackles turn white. (00:00:56)
Sneaky Lying Cheating Giant Ninja Koopas - S1-E2
Continuity mistake: When the Koopalings start approaching Prince Hugo's castle, they are holding weapons, but in the next shot, they disappear. In the same shot, Cheatsy's blue hair turns yellow. (00:03:06)
Sneaky Lying Cheating Giant Ninja Koopas - S1-E2
Continuity mistake: When the Koopalings break into Prince Hugo's castle, Kooky's green head turns orange like his body, while Cheatsy's yellow underbelly turns white. (00:04:15)
Sneaky Lying Cheating Giant Ninja Koopas - S1-E2
Continuity mistake: When the Piranha Plant bites Mario, Mario's raccoon tail changes from brown and black to red and cream, while his brown raccoon ears turn red like his cap. In the same shot, the Piranha Plant's tongue changes from yellow to pink. In the same shot, when Raccoon Mario turns back into his normal form, he still has raccoon ears for a short time. (00:05:02)
Sneaky Lying Cheating Giant Ninja Koopas - S1-E2
Continuity mistake: When Kooky says the Koopalings should go back to Kastle Koopa, his green shell turns orange. (00:06:33)