Continuity mistake: When the computer in Professor Oak's laboratory turns on, there are no lights or moulding, but in the next shot, there are. Also, the raised ceiling's limits to the left and right cannot be seen, but in the next shot, they can. Additionally, three panels are on the screen, but in the next shot, there are five. (00:06:29)
The Pokémon Water War - S2-E25
Continuity mistake: When people are first running, Tracey has his head turned, but in the next shot, it is not. (00:01:07)
Continuity mistake: When Ash allows Misty to have a break, there is no tree in front of the tree behind Ash that is closest to him, but in the next shot, there is. Also, Ash's head is turned, but in the next shot, it is not. (00:02:35)
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.