Continuity mistake: When Brock mentions that Ash has to win on the rock, grass, water, and ice fields to compete at the Indigo Stadium, a staff member of the Pokémon League is not smiling, but in the next shot, she is. (00:03:07)
Character mistake: When Team Rocket first sees Mandi doing his magic tricks, he produces a bunch of Pidgey. Meowth says "I like those Pidgeotto." He's dealt with Ash's Pidgeotto on numerous occasions, so there's no reason that he shouldn't be able to tell the difference. [This mistake only appears in the English version. In the Japanese version Meowth doesn't even mention Pidgey nor Pidgeotto at all.] (00:04:49)
Continuity mistake: When Professor Oak and Delia are first seen watching Ash's first battle at the Indigo Plateau Conference, Delia has a person to the left of her, and her hands are in her lap, but in the next shot, she does not have a person to the left of her, and her hands are clasped together. Also, she and Professor Oak are smiling, but in the next shot, they are not. (00:11:46)
Continuity mistake: When the Officer Jennys say that the news reporters are Team Rocket, Meowth's disguise disappears. (00:12:31)
Character mistake: When Mandi brings out Golbat, Brock says, "Kingler is really weak to air attacks." But Kingler's a Water type, which has no weakness to Flying-type attacks.
Suggested correction: Brock is saying that Kingler is vulnerable to attacks from the air, not that it is weak to Flying-type moves.
Revealing mistake: When Ash brings his first piece of meat into his mouth, another one disappears into thin air. (00:09:09)
The Fourth Round Rumble - S1-E77
Character mistake: When Officer Jenny orders her Growlithe to attack Team Rocket's balloon, she refers to Growlithe as Arcanine. [This mistake happens only in the English version. In the Japanese version she refers to Growlithe correctly.]. (00:12:21)
The Fourth Round Rumble - S1-E77
Character mistake: When a poster for the Pokémon League is seen, it misspells it as "Pokemon League." (00:20:22)
Factual error: When the power in the lift goes out, all of the lights turn off. However, in real life, some of these lights would remain on for emergency lighting. (00:04:28)
Continuity mistake: When the power goes out in the lift, Delia's shirt changes from yellow to blue. (00:04:30)
Continuity mistake: When Ash brings Pikachu to allow Ritchie to power the elevator, his right jacket strip goes from being absent to being present. (00:05:02)
Factual error: When the lift starts working again, the cables on one side of the lift are being pulled downward while the ones on the other side remain in place. However, lifts are pulley systems; if one end is pulled down, the other end is pulled up. (00:05:24)
Continuity mistake: When the elevator doors open to the first floor, the part of the elevator indicating where it is has its background grey, but in the next shot, it is black. (00:05:31)
Continuity mistake: When Ash is excited to see Ritchie when they are in the crowd next to the van, the people around Ash change. (00:06:41)
Revealing mistake: When Ash and Ritchie put their Poké Balls in the bag, Ritchie's right hand passes through it. (00:07:27)
Revealing mistake: When Ash and Ritchie fly out of the van, they are layered behind it. (00:19:03)
Continuity mistake: When the phone rings, it is six centimetres away from the lamp, but in the next shot, it is fourteen centimetres away. Also, the cabinet is three centimetres away from the top of the planks directly above it, but in the next shot, it is six centimetres away. (00:04:34)
Plot hole: After Ritchie tells Misty that he never talked to them through a phone, Misty could have put two and two together and realised that Ash was told to go somewhere by someone impersonating Ritchie and that he might be in serious danger. However, she does absolutely nothing to help Ash, she doesn't even inform Brock about it.
Continuity mistake: When Ash and friends are after Assunta wins, a man in a blue shirt has his left hand raised, but in the next shot, it is not. (00:08:33)
Other mistake: Assunta's Ivysaur attacks Sparky too early, before the battle even started, not to mention Assunta haven't given it any commands during the battle.
