The Case of the K-9 Caper - S1-E52
Continuity mistake: When Ash retracts his hands after placing his chopsticks on his bowl, they are not pointing to a bowl, but in the next shot, they do. (00:04:51)
Continuity mistake: When Ash pushes Brock out of the way, Brock is facing towards him, but in the next shot, he is facing away from him. (00:02:15)
Revealing mistake: When Todd tells Ash to stop spraying him, his bag passes through his body. (00:03:10)
Continuity mistake: When Todd says Ash and his friends know of the photographer who took the only known photo of Aerodactyl, the black collar on Ash's shirt turns white. (00:04:21)
Revealing mistake: When Ash and his friends look at the picture of Aerodactyl in the book, Ash's left arm passes through the book. (00:04:43)
Continuity mistake: When Todd says he will make sure to capture Pikachu's best side, his gloves appear. (00:05:55)
Continuity mistake: When Brock says Todd has a talent for photographing Pokémon, the yellow strap on Todd's camera turns black like the camera. (00:07:51)
Continuity mistake: When Todd is upside-down in a tree, his gloves disappear. (00:11:53)
Other mistake: When Todd says Ash and his friends are on time, his camera is in front of them despite him hiding from the side. (00:13:09)
Continuity mistake: When Todd jumps into the hole to save Ash, the blue strap on his camera case turns yellow, like the one on his camera. (00:15:21)
Continuity mistake: When Team Rocket is approaching the waterfall, James is to the left of Meowth, but in the next shot, he is to the right. (00:19:10)
Continuity mistake: When Ash takes his testing number, his gloves do not cover his thumbs, but in the next shot, they do. (00:02:58)
Continuity mistake: When Ash tells Todd to save his photography for Pokémon, Todd's blue camera case turns black, while the strap turns yellow, like the one on his camera. (00:04:33)
Factual error: When Jessie says she was a costume designer, her left foot is curved up, but her reflection shows it to be her right. (00:05:54)
Continuity mistake: When Meowth is suspicious of Jessie, pads appear on his forepaws. (00:06:11)
Continuity mistake: When Jessie says the swirl is an Arbok, her blue eyes turn green. In the same shot, her hair is not fully coloured in and the background can be seen through it. (00:08:37)
Continuity mistake: When Ash and Team Rocket are surprised, the instructor reveals the answer to the swirl question. Ash's right shoe changes from black to white. (00:08:46)
Continuity mistake: As the scoreboard lowers, Todd has his bags with him, but when he asks where Ash's picture is, they disappear. (00:10:07)
Continuity mistake: When Ash tells Weezing to use Smog, the left sleeve on Ash's jacket changes from white to blue. (00:14:12)
Continuity mistake: When the instructor sends out Jolteon and Vaporeon, the lower part of his shirt collar changes from blue to red. (00:14:51 - 00:16:12)
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.