He also has nowhere near the resources or armies of other Megatrons, and yet still manages to threaten all of Cybertron on a regular basis. His revival alone was considered a big enough threat to warrant a season finale. He manages to menace the Autobots without having a body, trounces them easily when he does get one, and consistently needs either a lot of luck or a very strong opponent to be laid low.
TRANSFORMERS ANIMATED CHARACTER SERIES
While they continue to be a threat requiring multiple Autobots to defeat individually, they became steadily easier to deal with as the series went on, and this is justified as the Autobots become more experienced fighting them.