Revealing mistake: When Bumblebee is knocked onto his side, Ratchet kneels down to shove him back onto his wheels. The only problem is that when Bumblebee drives away, the animators forgot to add Ratchet's leg (that was previously obscured) into the frame.
Transformers (1984)
1 revealing mistake - chronological order
Starring: Frank Welker, Corey Burton, Peter Cullen, Christopher Collins, Chris Latta
Genres: Action, Adventure, Animated, Family, Fantasy, Sci-fi, Thriller, War
Desertion of the Dinobots (1) - S2-E19
Plot hole: Perceptor discovers that the reason for their malfunctioning is because their Cybertonium has deteriorated after millions of years of being exposed to Earth's atmosphere. The key word here being 'millions'. This explains why the original Transformers who crash landed on Earth (4 million years ago) are affected, but newer characters like Perceptor, Powerglide, Hoist, etc. are affected despite the fact that they have only been on Earth recently.
Rodimus Prime: Last big party of the summer, folks! Let's go out with a bang.
Ultra Magnus: Just once, couldn't your attitude reflect the gravity of the situation?
Rodimus Prime: Not if I can help it.
Call of the Primitives - S3-E26
Question: When all the animal transformers start to follow the call, Soundwave states that his ejection has activated by itself. After Ravage and Ratbat, who are those other two tapes?
Answer: These two were 'dinosaur' cassettes Overkill and Slugfest, then-new toys. They turn up this once and that's it, though.
Daria Sigma