Character mistake: As Team Rocket discovers the cloning machine made by Mewtwo, they start naming the shadows of each Pokemon as they appear on the screen. As the first Pokemon appears on screen, they say "Alakazam" but it is actually an outline of "Scyther" who is a different type of Pokemon.
Character mistake: The banner of the fundraiser event for the Gotham upper class says "Childrens Hospital", no apostrophe. (00:11:55)
Suggested correction: As explained in the DVD commentary, Team Rocket don't know everything about Pokemon. They thought it was an Alakazam though.