Continuity mistake: When the girls first came out of the machine, they were actually just the size of insects, and the professor didn't need a helmet to see them, but when they was during the battle, he had to.
The Powerpuff Girls (1998)
1 continuity mistake in season 4 - chronological order
Starring: Tara Strong, Tom Kenny, Elizabeth Daily, Cathy Cavadini
The Powerpuff Girls Best Rainy Day Adventure Ever / Just Desserts - S2-E10
Plot hole: I don't think the police would throw the wife and children in the same jail cell as Harold.
More quotes from The Powerpuff Girls
The Powerpuff Girls Best Rainy Day Adventure Ever / Just Desserts - S2-E10
Trivia: The professor drives off to the store with his blindfold on.
Moral Decay / Meet The Beat Alls - S3-E13
Question: How much money did Buttercup make from knocking teeth out?