Continuity mistake: When Scott says that a direct hit is needed for Water Pulse to be effective, the pattern on May's bandanna changes from white with a red lining to red with a white lining. (00:12:50)
Continuity mistake: When Noland tells Articuno to finish the battle with Steel Wing, his glove disappears. (00:16:52)
Continuity mistake: When a downward camera view of Charizard going to the ground is seen, Ash, Pikachu, Noland, and the referee are on the ground, but in the next shot, they are on platforms. Also, there are markings on the ground, but in the next shot, they disappear. (00:11:48)
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.