Mystery at the Lighthouse - S1-E13
Continuity mistake: When Ash asks Professor Oak if Krabby is all right, Professor Oak's coat goes from white to red with the pot going from brown to grey. Additionally, the background changes design between shots. Furthermore, a bowl, a ladle, and a spoon go from being present to vanishing. Moreover, the camera view goes from being aligned with Professor Oak to not with his left-hand going from being lowered to being raised. (00:08:51)
Revealing mistake: When Nurse Joy is in the emergency room, a light is floating in midair without being attached to anything. Also, a left door goes from being absent to being present. (00:06:31)
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)
All Things Bright and Beautifly! - S6-E13
Continuity mistake: When Venomoth is first eating, it is not on Chaz's right elbow joint, but in the next scene, it is. (00:04:53)
Continuity mistake: When Ash says, "Uh-oh," Pikachu's pose changes between shots. (00:00:45)
Revealing mistake: When Ash says, "Seems almost magical," the end of Pikachu's tail is missing. (00:03:59)
Revealing mistake: When first revealing a Lotad, the Lotad appears from nowhere. (00:02:10)
Continuity mistake: When Ash notices that his rucksack is missing, there is a dirt area past a tree, but in the next shot, there is not. Also, there is not another one in front of a tree, but in the next shot, there is. (00:01:45)
Continuity mistake: When Brock says, "It's a cave where a lot of Onix are supposed to live," he is present, but in the next shot, he is not. (00:01:32)
Kunugidama and the Bonguri Fruit! - S3-E27
Continuity mistake: When Maizie says, "You really helped us out!" she does not have a red dot on her right cheek, but in the next shot, she does. (00:01:37)
Ubame Forest! Search for Kamonegi!! - S3-E29
Continuity mistake: When Ash mentions that he had the same problem, Pikachu goes from facing straight to facing Ash. (00:04:58)
Mysterious Superhero! Gligarman Enter!! - S3-E22
Continuity mistake: When the Pokédex is describing Gligar, Ash's left index finger and the one below it are together, but in the next shot, they are apart. (00:01:47)
Merriep and the Pasture Girl - S3-E23
Continuity mistake: When Ash turns his head after Mary tells the Mareep to stop interacting with Pikachu, the back of his hat goes from red to white and then back to red. (00:03:37)
Hanecco's Jealousy! Battle in Big Prairie!! - S3-E21
Continuity mistake: When Ash uses his Pokédex to find facts on Hoppip, the end of his right index finger is covered by it, but in the next shot, it is not. (00:01:52)
Continuity mistake: When Ash uses his Pokédex to find facts on Sentret, his right index finger and the one below it are together all of the way, but in the next shot, they are apart towards their ends. (00:05:38)
Continuity mistake: When Ash takes out his Pokédex to find facts on Quagsire, it and his right hand clip through him. Also, his right sleeve goes from being all white to white and blue and his right jacket strip goes from being present to being absent. (00:02:09)
Continuity mistake: When Ash uses his Pokédex to find facts on Spinarak, three of his fingers are on the left side of it, but in the next shot, one is on the side. (00:05:35)
Continuity mistake: When Ash uses his Pokédex to find facts on Chikorita, his right thumb is not covered and his right pinkie finger is not bent, but in the next shot, his thumb is covered and his pinkie finger is bent. (00:02:54)
Continuity mistake: When Ash uses his Pokédex to find facts on Hoothoot, his left index finger is not past the right side of the Pokédex, but in the next shot, it is. (00:03:36)
Continuity mistake: When Ash turns after he wonders how the Heracross will help the Butterfree, the marks on his cheeks go from being present to being absent and then back to present. (00:03:02)
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.