Pokemon, I Choose You! - S1-E1
Audio problem: When Delia Ketchum says, "Oh, Ash, I'm so proud of you," the items that the Pallet Town townspeople are holding aren't being moved, however, the sound from banging of those items is heard. (00:07:35)
Pokemon, I Choose You! - S1-E1
Audio problem: When Misty says, "That way," her mouth does not move. (00:16:38)
Mystery at the Lighthouse - S1-E13
Audio problem: When Ash and friends are turning their heads to look at the lighthouse, footsteps are heard, but they are not moving. (00:07:14)
Audio problem: When Officer Jenny says, "Let's see. If you're the real deal..." her mouth does not open. (00:03:21)
Audio problem: After James says that Team Rocket should capture Sylveon, the sound of Wobbuffet's Poké Ball opening can be heard, despite him already being out. (00:06:27)
Flower Power - S3-E6
Audio problem: Towards the end of the episode, when Ash and his friends are cheering for Bailey, Misty's mouth moves, but no sound can be heard. (00:20:13)
Fierce Battle in the Monster Ball Factory! Pikachu VS Nyarth!! - S18-E34
Audio problem: When Clemont tells the factory workers to wait, his mouth does not move. (00:02:47)
Audio problem: During the battle with Team Rocket, when Ash tells Pikachu to use Thunderbolt for the first time, Pikachu's voice plays before his mouth moves. (00:16:41)
Eifie and Sakura! Enju City Once Again!! - S5-E17
Audio problem: When Brock says that he cannot tell which of the Kimono Sisters is the most beautiful, his mouth does not move. This also happens with Satsuki after Jessie asks the Kimono Sisters if they are looking for dance instructors. (00:03:13 - 00:04:48)
Freezer vs Purin! In the Middle of a Snowstorm!! - S4-E32
Audio problem: After Brock says that Ash and Todd cannot climb the mountain without proper clothing, Misty moves her mouth, but no sound can be heard. (00:10:15)
Audio problem: After Jessie says that Team Rocket has to investigate, Meowth speaks, but his mouth does not move. (00:02:07)
Kirinriki! The Village of Esper Pokémon! - S3-E40
Audio problem: When Girafarig speaks, after Cherry tells Ash to relax, its voice plays before its mouth moves. (00:03:21)
Audio problem: After Dr. Proctor says that he is off-duty, his mouth moves, but no sound can be heard. (00:05:39)
The March of the Exeggutor Squad - S1-E41
Audio problem: When Jessie and James enter the box, they speak, but their mouths do not move. (00:12:30)
Ditto's Mysterious Mansion - S1-E36
Audio problem: When Ash tells his friends to help save Ditto, Misty speaks, but her mouth does not move. (00:14:26)
The Flame Pokemon-athon! - S1-E33
Audio problem: In the English dub, when Pikachu gets Ash back up with a shock, Ash's Japanese voice can be heard. (00:12:51)
Pokemon Fashion Flash - S1-E28
Audio problem: When Jessie asks Misty if she likes her new look, James' mouth moves, but no sound can be heard. (00:12:39)
Electric Shock Showdown - S1-E14
Audio problem: When Ash thanks Lt. Surge, he speaks without moving his mouth. (00:19:22)
Electric Shock Showdown - S1-E14
Audio problem: When Nurse Joy walks over to Ash, she speaks without moving her mouth. (00:11:04)
The Breeding Center Secret - S1-E55
Audio problem: When Butch puts a Charmander on a conveyor belt, Cassidy speaks, but her mouth does not move. (00:03:08)
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.