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 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 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 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 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)
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)
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 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)
7 Continents for 7 Koopas - S1-E22
Character mistake: When first displaying the screens which have the names of the continents listed underneath them, Antarctica is misspelt as "Antartica."
