Continuity mistake: When Ash gets the certificate, part of Pikachu disappears briefly. Also, the man with a red shirt goes from having a split in his shirt too not. Additionally, a girl with an orange shirt between Ash and Officer Jenny goes from being there to vanishing with a man with a yellow shirt going from absent to present. Furthermore, the woman with a green tank top goes from having pink shorts and people to the right of her to having pink pants and not having people to her right. (00:20:20)
Factual error: It is stated in this episode that Ghost types are strong against Psychic Pokémon. However, in Generation I, Psychic types were only weak to Bug-type attacks. It is also implied that Ghost-type Pokémon are immune to Psychic-type attacks. However, they actually take normal damage from Psychic-type attacks.
Continuity mistake: When Meowth says that he will use The Crystal Onix to make a charm, his white claws turn cream, like his body. (00:16:51)
Character mistake: Mateo orders his Charmeleon to use Ember against Crystal Onix but it uses Fire Spin instead. [It is yet another result of mistranslation. In the original version he orders Charmeleon to use Fire Spin.]. (00:18:42)
Continuity mistake: In several shots throughout the episode, the black straps on Tracey's bag turn orange.
Continuity mistake: When Misty says, "I wouldn't be surprised if the next gym leaders are tougher than the last ones," the right strap of Tracey's rucksack is on his collar, but in the next shot, it is not. Also, the marks on Ash's cheek go from looking like zs to looking like two pairs of lines. Additionally, his mouth is open, but in the next shot, it is closed. (00:01:42)
Other mistake: When Meowth is reading about the trophy, he has five lines on his charm instead of four. (00:03:30)
Other mistake: When Meowth shifts his eyes from his book about the trophy to the trophy, he has five lines on his charm instead of four. (00:04:11)
Other mistake: When Team Rocket is running away with the trophy, James falls flat on the ground, and an indentation of his body as well as the trophy is made. The indentation shows a perfect match to the trophy, but James' arms were partially covering it, so there shouldn't be a perfect indent of the trophy in the ground. (00:05:18)
Continuity mistake: When Tracey wonders why everyone is outside the museum, the black straps on his bag turn orange, like the rest of the bag. (00:05:29)
Revealing mistake: As Ash, Misty, and Tracey are making their way through the crowd, Tracey clips through one of the people in it. (00:05:33)
Continuity mistake: When Tracey asks if Misty is coming with him and Ash, part of Misty's arms changes from skin-colour to yellow. (00:01:49)
Continuity mistake: When Misty steps on Tracey, Tracey's blue shoes turn black. (00:02:13)
Character mistake: Misty is notoriously afraid of bugs. She makes this clear whenever bugs are around. She seems to be OK with Tracey's Venonat, but for some reason doesn't think it should be classified as a bug, when its type is Bug/Poison, and it's quite obvious that "Venonat" comes from "venom gnat, " a gnat being an insect. She even directly states that "At least they're [Venonat and Marill] not Bug types." [This error doesn't happen in the Japanese version.]. (00:03:19)
Continuity mistake: When Ash throws a Poké Ball to catch Scyther, his bag disappears. (00:04:40)
Continuity mistake: When Lickitung runs into Victreebel, its pink eyebrows turn yellow. (00:17:15)
Continuity mistake: When Tracey recalls Scyther, the ring around the button on the Poké Ball disappears. (00:20:36)
Continuity mistake: When Team Rocket blasts off, Arbok's pattern changes from red with yellow centres to yellow with red centres. (00:19:03)
The Mandarin Island Miss-match - S2-E18
Continuity mistake: When Ash wins the match in the beginning, Tracey's orange bag turns green like Ash's. (00:01:12)
The Mandarin Island Miss-match - S2-E18
Revealing mistake: When Prima walks over to Ash and his friends, she is briefly layered between the table and Tracey. (00:03:06)
Answer: Yes it ran away because Layla hurt its feelings.