* Ash tells Professor Oak that Snorlax is his only Pokémon that meets the weight condition, but any of his 88.4-kg Tauros could also qualify.
* During one of Feraligatr's lunges at Blastoise, its jaw is blue instead of cream.
* On the rostrum, a Machamp's jaw is miscolored dark gray instead of cream.
He is also drawn with fangs , which Machamp normally does not have.
* In one scene, Nidoking is grey instead of purple.
* During another scene, the competing Pokémon are shown on a wall. Six are shown, but there should be at least eight. Since the sumo competition is a single-elimination style tournament, there must be two, four, eight, sixteen, or etc. competitors.