Continuity mistake: When the security guard enters the room where Brian had hacked the computer, he's out of sight, having hidden in the vent above the room. But he was sitting in the chair just moments before as the guard was opening the door. He couldn't possibly have made it up there in time.
Goosebumps (1995)
1 continuity mistake in Perfect School (2)
Starring: Cody Jones, Kathryn Short, R.L. Stine, Scott Wickware
Attack Of The Mutant (1) - S2-E2
Other mistake: In part 2, it was revealed that Libby was really the Masked Mutant all along but, in one scene in this episode, Libby is sitting next to Skipper while the Masked Mutant is standing on top of the bus.
Hannah: Hey, Alex. What's the matter? I told you I don't bite.
Attack Of The Mutant (1) - S2-E2
Trivia: The bus which Skipper keeps catching to go to the headquarters has "Goosebumps" adverts on the side of the bus, saying "two thumbs up."
More questions & answers from Goosebumps
Answer: He repeatedly warns him against using the universal remote for bad purposes. However, Seth, blinded by remote's abilities, completely ignores and disregards Tony's warnings and uses the remote when and how he pleases, which eventually turns against him.