Ancient Pokémon Rampage! - S10-E17
Continuity mistake: Before Jessie, James, and Meowth say their names, Meowth's tail turns completely cream-coloured. (00:13:57)
Ancient Pokémon Rampage! - S10-E17
Continuity mistake: When Pikachu and Sudowoodo are defeated by Kabutops and Armaldo, Roark's gloves disappear, while Brock's green sleeves turn brown. (00:13:20)
Ancient Pokémon Rampage! - S10-E17
Continuity mistake: When Roark distracts Kabutops and Armaldo, Armaldo's black claws turn blue like its arms. (00:13:09)
Ancient Pokémon Rampage! - S10-E17
Continuity mistake: When Jessie asks what move Aerodactyl is using, the ring around the button on the Poké Ball disappears. (00:07:12)
Ancient Pokémon Rampage! - S10-E17
Revealing mistake: When Buneary jumps down from a rock, it passes through it. (00:01:39)
Ancient Pokémon Rampage! - S10-E17
Revealing mistake: When Ash's Pokémon turn after he compliments their battling, Turtwig appears to be floating in midair. (00:01:33)
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.