Kirinriki! The Village of Esper Pokémon! - S3-E40
Continuity mistake: After Brock says that Misty has a Psyduck, the strap on Misty's bag disappears. (00:04:05)
Kirinriki! The Village of Esper Pokémon! - S3-E40
Continuity mistake: When Ash and his friends look at the bushes, Misty's bag disappears. (00:02:17)
Kirinriki! The Village of Esper Pokémon! - S3-E40
Continuity mistake: When Ash uses his Pokédex to find facts on Girafarig, his left index finger and the one below do not go past the right side of the Pokédex, but in the next shot, they do. (00:03:25)
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.