The Path to the Pokemon League - S1-E8
Continuity mistake: When A.J. removes his bag, the straps on Ash's are green, but when Butterfree picks up A.J.'s, the straps on Ash's have changed to black. (00:03:27)
Continuity mistake: When there is a front view of Ash carrying Pikachu to the Pokémon Center, his left strap is green, but in the next shot, it is blue. (00:02:17)
Mystery at the Lighthouse - S1-E13
Continuity mistake: When the Poké Ball Ash uses for Krabby indicates success, it is at a 22° angle, and there are pieces of wood on the ground, but when Ash goes over to retrieve it, it is at a 45° angle, and the pieces of wood previously on the ground have disappeared. (00:04:49)
The Case of the K-9 Caper - S1-E52
Continuity mistake: When Officer Jenny is first with a tray with cups, the last character on the paper on the wall in front of the back wall to the left disappears between shots. (00:04:12)
The Case of the K-9 Caper - S1-E52
Continuity mistake: When zooming out on Officer Jenny when she is in the police station, there is no spatula on the wall, but in the next shot, a spatula appears. Also, the last character on the paper to the left changes. (00:04:15)
Pokemon, I Choose You! - S1-E1
Other mistake: When Ash gets Pikachu's Poké Ball from Professor Oak, the latter's hand right hand is drawn backwards. (00:06:52)
Pokemon, I Choose You! - S1-E1
Continuity mistake: When Gengar dodges, there is a Poké Ball pattern on the field, but in the next shot, it disappears. (00:01:57)
Pokemon, I Choose You! - S1-E1
Continuity mistake: When Ash leaves on the bicycle, his zipper line is black, but when he says,"I'll give it back someday!" the zipper line has changed to green. (00:17:05)
Continuity mistake: When Brock says if there are Ghost-type Pokémon, then they can show themselves to them, he, Ash, and Misty are between a doorway, but in the next shot, they are not. (00:08:33)
So Near, Yet So Farfetch'd - S1-E47
Continuity mistake: When Team Rocket takes off in the boat, it sinks. Their pokeballs float away, and Jessie says "Arbok and Lickitung are floating away!" But she doesn't catch Lickitung until Princess Versus Princess (Season 1, Episode 52).
Suggested correction: It's because these episodes were aired out of order.
Character mistake: Brock states that the Diglett are plowing the ground and the Dugtrio are planting the trees, but the opposite is true (The Dugtrio are plowing, and the Diglett are planting).
The Ninja Poke-Showdown - S1-E32
Factual error: When Venonat uses Stun Spore, Ash tells Bulbasaur to use Whirlwind. Bulbasaur just blows the powder away with his mouth, but he doesn't use the Whirlwind attack. He can't learn Whirlwind in any of the games, and what Whirlwind is supposed to do is to blow the opposing Pokemon away. Ash could have just as easily told Bulbasaur to blow it away, but he instead chose to tell him to use a move that he can't possibly learn. The only Pokemon that can learn Whirlwind are either Flying types or Bug types; i.e., Pokemon with wings (with the exception of Makuhita and Hariyama, which weren't introduced until generation III, and did not exist at the time this episode aired). In The School of Hard Knocks (Season 1, Episode 9), a character mentions information regarding a Pokemon's levels, attacks, and information which is taken straight out of the game, so it's very clear that Bulbasaur should not be able to use Whirlwind. [This is a result of mistranslation. In the original, Japanese version Ash orders Bulbasaur to "blow it away." He didn't say Whirlwind. Still a mistake in the English version.]
Pokemon, I Choose You! - S1-E1
Continuity mistake: When the capsule containing the three pokeballs first opens up, you can see the names of the Pokemon etched into the balls (in Japanese). But when Ash picks them up, the names are gone.
The March of the Exeggutor Squad - S1-E41
Other mistake: The Pokemon Exeggcute is shown evolving in to an Exeggutor naturally. But the Pokemon Exeggcute can only evolve into an Exeggutor with the use of a leaf stone. In the Japanese version, there is a mention that something in these woods causes Exeggcute to evolve without using the Leaf Stone (when Exeggcute evolves, James even mentions that there is no stone). However, as this was skipped in the English version, it creates a plot hole.
Character mistake: During the recap, the narrator says that Ninetales had defeated Squirtle by using Ember, but Blaine ordered it to use Fire Spin. [This error doesn't appear in the Japanese version.].
Character mistake: When Mandy 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.
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.
Factual error: When we see that Dodrio's neck is tangled, the configuration doesn't make sense. It just looks like two bands of neck, but it doesn't reflect what it would actually look like if it was really tangled.
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.
Bulbasaur and the Hidden Village - S1-E10
Other mistake: In the scene when Team Rocket tries to steal the Pokemon, Bulbasaur saves Oddish. Ash comes to help push Bulbasaur, and for a few frames you can see 2 sets of hand prints cut out where Ash's hands go.
