Island of the Giant Pokemon - S1-E17
Other mistake: When Ash wakes up on the beach, part of the sides of the hat overlaps the front. (00:01:53)
Continuity mistake: When Team Rocket begins reciting their motto, Jessie's gloves disappear. (00:06:42)
Continuity mistake: When Ash and his friends recall their Pokémon during their battle with Team Rocket, Ash's left glove disappears. (00:07:58)
Continuity mistake: When Meowth says that Jessie and James picked a bad place for their nap, the black edge of his ears turns cream. (00:04:04)
Continuity mistake: When Jessie tells Ekans to use Acid, the stripe on its tail disappears. (00:04:45)
Continuity mistake: When Ash and his friends paddle away from Gyarados, the tips on Meowth's feet disappear. (00:18:52)
Battle Aboard the St. Anne - S1-E15
Continuity mistake: When Ash is impressed on seeing the inside of the cruise, his bag disappears. (00:05:57)
Battle Aboard the St. Anne - S1-E15
Continuity mistake: When Jessie insults James for getting tricked by the salesman, she appears in her regular clothes, instead of her disguise. (00:12:12)
Mystery at the Lighthouse - S1-E13
Continuity mistake: During the motto, James' purple belt turns white in one shot, and shortly after, Meowth's cream forepaws turn orange. (00:11:38)
Battle Aboard the St. Anne - S1-E15
Continuity mistake: When a passenger asks the captain if the ship is a little off-course, a crowd surrounds a hallway, but in the next shot, the hallway disappears. (00:18:39)
Mystery at the Lighthouse - S1-E13
Continuity mistake: After Krabby's Poké Ball disappears, the white stripe on Ash's bag turns orange. (00:05:05)
Mystery at the Lighthouse - S1-E13
Continuity mistake: When Misty says that the lighthouse will probably have extra beds, her suspenders disappear, while the purple strap on her bag turns red like them. (00:06:49)
Showdown in Pewter City - S1-E5
Continuity mistake: When Flint tells Ash to come with him, Ash's gloves disappear. (00:08:15)
The Path to the Pokemon League - S1-E8
Continuity mistake: When Team Rocket is sneaking around the Gym while inside a ball, Meowth's cream forepaws turn orange. (00:12:44)
Continuity mistake: When the power goes out in the Pokémon Centre, Nurse Joy's pink dress turns white, while her white apron turns pink. (00:14:21)
Showdown in Pewter City - S1-E5
Continuity mistake: When Team Rocket is wondering where the trap is, Jessie's right glove changes from black to skin-colour. (00:01:46)
Revealing mistake: When Team Rocket first appears in the Pokémon Center, they are slightly transparent, and the background can be seen through them. (00:13:00)
Battle Aboard the St. Anne - S1-E15
Continuity mistake: In the first shot of the episode, the warehouses at Vermilion Harbor have their entrances facing perpendicular to the bridge leading to them, but as the camera pans closer to Vermilion Harbor as Ash and friends approach it, the entrances face parallel to the bridge. (00:01:28)
Mystery at the Lighthouse - S1-E13
Continuity mistake: When Ash is looking around for Krabby's Poké Ball after it goes from his right hand, the background is a beach at sunset, but in the next shot, it is a forest at sunset. (00:05:06)
Pokemon, I Choose You! - S1-E1
Continuity mistake: When Professor Oak says that tomorrow is an important day for new Trainers, the borders on the board with pictures of the starter Pokémon are blue, but in the next shot, they are brown. (00:02:54)