Mewtwo Strikes Back
In the scene where trainers are using their Pokémon to fly to New Island a boy
takes of on a Pidgeot. A few minutes later, Officer Jenny appears, and he takes off
again on a Fearow.
One of the trainers claims that all his Pokémon are Water Pokémon. When
he shows his team he has a Nidoqueen, which is a Poison/Ground Pokémon.
When the screen of the cloning machine is showing Pokémon silhouettes, the
first Pokémon is Scyther, but Team Rocket says Alakazam.
During the fight between Ash and the tough trainer, the trainer throws up 5 or
6 Pokéballs, only 4 hit the ground, and only 3
One kid says he rode over on a Pidgeotto, but it was a Pidgeot, anyway Pidgeotto
wouldn't be able to carry a human.
In the battle at the beginning of the Movie, the trainer sends out several Pokémon,
one of them is Golem, a Rock/Ground Pokémon. Pikachu attacks with
Thunderbolt, knocking out all the Pokémon, even though electric attacks don't
have an effect on Rock/Ground type Pokémon.
- This isn't really a mistake, but when Pikachu's silhouette appears on the screen
Team Rocket says "Who's that Pokémon?", even though they've been after
it for so long.