Continuity mistake: When Team Rocket starts flying with the Ledyba, the tips on Meowth's feet disappear. (00:14:24)
Continuity mistake: When Ash and his friends watch the Ledyba fly away, Misty's bag is on her right shoulder, but in the next shot, it is on her left. (00:10:15)
Continuity mistake: When Ash says that there has to be another way to cross the river, the white stripe on his bag disappears. (00:02:46)
Revealing mistake: When Ash's friends run over to him, as he dives into the pool, Pikachu can be running in midair. (00:14:27)
Attack of the Prehistoric Pokemon - S1-E44
Continuity mistake: When Ash and his friends are surprised, Charmeleon starts evolving. The black straps on Brock's bag turn green like his vest. (00:15:44)
Continuity mistake: When Team Rocket blasts off, Arbok's pattern changes from red with yellow centres to yellow with red centres. (00:19:03)
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 Ash calls out to Pikachu after he disappears, his bag disappears. (00:03:49)
Continuity mistake: When Misty says that she and her friends have to go to Valencia Island, her bag disappears. This also happens at the end of the episode. (00:14:48 - 00:20:53)
Revealing mistake: When Ash tells Lapras to go back to the ocean, his left arm is transparent. (00:14:18)
Continuity mistake: Right before Tracey says that Ash is heading towards a cliff, Pikachu's tail turns completely yellow. (00:19:13)
Revealing mistake: The pedal James presses when he slows down the lorry is the same one he used when speeding it up. This is due to the shot of him slowing the lorry down being a recycled shot of him speeding it up. (00:18:35)
Continuity mistake: When Team Rocket is eavesdropping on Ash and his friends, Meowth does not have a lei, but in the next shot, one appears. (00:09:06)
Continuity mistake: When Ash tells Tracey to watch out, the strap on Misty's bag disappears. (00:06:30)
Continuity mistake: When Misty tells Ash that they should take a break, her bag disappears. This also happens when she says that they may be on a deserted island. (00:02:28)
The Path to the Pokemon League - S1-E8
Continuity mistake: When Misty says that she and Brock giving Ash the Badges was a mistake, the purple strap on her bag turns yellow, like her shirt. (00:02:11)
The Path to the Pokemon League - S1-E8
Continuity mistake: When Ash and his friends are standing in front of A.J.'s Gym, Ash's white sleeves turn blue. (00:02:45)
Continuity mistake: When Ash asks what Team Rocket is talking about, pads appear on Meowth's forepaws. (00:13:26)
Flap, Yanyanma! Fly to Tomorrow's Sky!! - S4-E20
Character mistake: At the beginning of the episode, the narrator says that Ash and his friends are heading to Johto. However, they are already in Johto. (00:00:07)
Tsubotsubo vs Madatsubomi - S4-E13
Continuity mistake: When Ash has a hunger pang, the orange stripe on his bag turns cream-coloured. (00:03:14)
Answer: He is a good guy but just found himself in a bad situation when he worked for Lysander. He didn't want him to harm Ash and his Pokémon when he was trying to get the special bond between Ash and his Greninja to work. He does leave Lysander and go back to being a good person.