Continuity mistake: When Mario trips, while telling Billy the Koopa and his Koopa Troopas to stop, the red linings on his shirt turn white, like his gloves. (00:11:27)
Continuity mistake: When Billy the Koopa says that he will trap Mario, his trousers disappear, and shortly after, part of his lower jaw is not fully coloured in. (00:09:06)
Revealing mistake: When Pronto starts dodging the Koopa Troopas, he briefly appears to be floating in midair. (00:10:51)
Character mistake: After Pronto warns Mario of the path being a trap, Mario says that he earned an A plus for unclogging drains in the Brooklyn Plumbers Academy. However, in "Plummers Academy", he actually flunked out of the academy along with Luigi. (00:09:29)
Continuity mistake: After Mario shoots one of the Koopa Troopas, the Koopa Troopa has a tan band on its hat, but in the next shot, the band turns red. (00:13:32)
Continuity mistake: When Mario shoots one of the X's on the Double Cross Ranch sign, the sign is supported by two poles, but in the next shot, it is supported by one. (00:14:02)
Revealing mistake: When the camera pans across the front of Double Cross Ranch, the edge of an animation cel is visible. (00:13:51)