The skies fill with fighter jets, and gigantic robots stalk the streets, all under the unwavering command of Megatron, leader of the evil Decepticons. It looks like the Autobots have got their work cut out for them again. Megatron is the primary antagonist in the Transformers franchise, causing trouble since he first appeared in 1984. There are now many different versions of the evil leader, based on his appearances in comics, movies, and various animated series, and this means there are plenty of action figures to keep collectors busy. For serious collectors, there is the Transformers Masterpiece Megatron, a redesigned version of the classic Megatron toy that transforms into a stylized toy gun. For the kids, there are plenty of cheaper alternatives, including the Beast Wars Megatron, which transforms into a tyrannosaurus rex. These exciting action toys are available from the reliable sellers on eBay, who have a massive selection of new and used Megatron action figures, including rare toys you are unlikely to find in stores.