Taming of the Shroomish - S6-E9
Continuity mistake: When May is first seen, Max and Pikachu are absent, but in the next shot, they are present. (00:00:06)
Taming of the Shroomish - S6-E9
Continuity mistake: When May says, "No, Max, it's the wonderful scent of the big city," Pikachu's left forepaw is not only on Ash's hoodie, but in next shot, it is. Also, there is no gap between Ash and Brock, but in the next shot, there is. (00:00:12)
Taming of the Shroomish - S6-E9
Continuity mistake: When Max finds a Shroomish, Pikachu's left forepaw is on Ash's collar, but in the next shot, it is on his left sleeve. (00:04:22)
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.