Try to Study! Pokémon Trainer's School! - S6-E15
Revealing mistake: When Ash says, "No problem!" in response to Roxanne asking if it is all right to postpone his match at the Rustboro Gym, Pikachu's mouth duplicates. Also, Ash and Roxanne go from being 90 centimetres from each other to being 30 centimetres away. Additionally, the former's bag goes from being present to vanishing. (00:06:18)
Try to Study! Pokémon Trainer's School! - S6-E15
Continuity mistake: When Tommy quizzes Max on his information on Pokémon, a girl with red hair in a ponytail with white shirt is sitting behind him, but in the next shot, her shirt is yellow and has pink hair without a ponytail. Also, Max's body is facing the front of the classroom with his head not turned to Tommy, but in the next shot, his body faces to the left with his head facing Tommy. (00:07:00)
Try to Study! Pokémon Trainer's School! - S6-E15
Revealing mistake: When Anita says that Kenny does not care about Pokémon either, she is sitting in midair. (00:09:46)
Try to Study! Pokémon Trainer's School! - S6-E15
Continuity mistake: When Tommy says, "Today, we'll finish up what we started yesterday, Anita has her hands raised, but in the next shot, they are lowered. Also, her case does not have metal parts on the front corners and the back right corner, but in the next shot, it does. (00:10:04)
Continuity mistake: When Pikachu agrees after Ash says, "Yeah, that's it!" his body is facing towards the rock, but in the next shot, it is not. (00:00:10)
Continuity mistake: When Ash says, "Uh-oh," Pikachu's pose changes between shots. (00:00:45)
Continuity mistake: When Brock asks why May would pass on her match at the Rustboro Gym, the back of her body is in front of a backrest, but in the next shot, it is not. (00:02:09)
Continuity mistake: When Max says, "That's so cool, Ash," Ash's left index finger goes from not being completely covered by his badge case to being completely covered by it. (00:00:03)
Continuity mistake: When Ash asks, "What are you talking about?" the left page May is on goes from having a rectangle that is four centimetres wide to having one that is two centimetres wide. Also, the lights on the ceiling move further apart between shots. (00:00:31)
On a Wingull and a Prayer - S6-E18
Revealing mistake: At the beginning of the episode, when Pikachu speaks, his mouth duplicates. (00:00:05)
On a Wingull and a Prayer - S6-E18
Other mistake: When Crawdaunt first appears, the bottom of its claws are mistakenly coloured red instead of cream. (00:09:25)
On a Wingull and a Prayer - S6-E18
Continuity mistake: When the Team Aqua Grunt says that he will stop hurting Peeko if Mr. Briney gives him his boat, his glove disappears. (00:09:31)
Continuity mistake: When Ash and Brock head over to the left side of the boat after hearing Max and May from the water, the door to the right of therm has no handle, but in the next shot, it has one. (00:06:00)
Continuity mistake: When Ash asks if Pikachu is ready for his challenge at the Dewford Gym, a poster behind a plant and a light go from being absent to being present. Also, the plant changes designs between shots. (00:00:03)
Continuity mistake: When Ash asks what they know about losing, the brown linings on Brock's jacket turn orange. This also happens when Ash runs out of the Pokémon Center. (00:18:12)
Which Wurmple's Which? - S6-E21
Revealing mistake: When turning to agree with Brock, May and Max duplicate. (00:07:19)
Continuity mistake: After Brock places a sticker on a rock, the rock's cracks change between shots. (00:02:46)
Continuity mistake: When Brock says, "They're training, all right," Max's head is not turned, but in the next shot, it is. Also, May's hands are closed and have their front at her sides, but in the next shot, they are open and have their back at her sides. (00:03:20)
A Corphish Out of Water - S6-E24
Continuity mistake: When Ash is first surprised, Taillow disappears briefly. (00:00:45)
A Corphish Out of Water - S6-E24
Continuity mistake: When Corphish knocks Ash into the air, its pincer turns completely red. (00:01:15)
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.