Continuity mistake: After Ash and his friends say that three against one is unfair, Machoke's black briefs turn blue like its skin. This also happens when it uses Cross Chop. (00:02:36 - 00:11:58)
Continuity mistake: When Ash tells Phanpy to use Defense Curl, his glove disappears while his right sleeve changes from black to blue. (00:03:10)
Continuity mistake: When the camera zooms out on Ash and his friends sliding down the hill, May's gloves turn completely blue. (00:09:14)
Continuity mistake: When Ash approaches the bumpers, his bag disappears. This also happens before he points out that the Machoke and Machamp are the same. (00:09:38 - 00:11:16)
Continuity mistake: When Meowth is keeping the net closed, Psyduck's cream-coloured feet turn white. In the same shot, Jessie speaks, but her mouth does not move. (00:10:43)
Continuity mistake: When Emily says that this is the third time Psyduck ran away, May's gloves disappear. (00:13:18)
Continuity mistake: When Ash and his friends leave, the stripe on Ash's bag changes from being above the circle to below it. (00:20:50)
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.