Serpentor was a man created by Cobra from the combined DNA of past military geniuses (most of whose tombs have been missing for centuries), clothed in a ridiculous snake-themed costume. He kicked Cobra Commander out of his own terrorist organization and took over... for a little while, anyway.
Marvel Comics continuity
G.I. Joe and the Transformers
(This story did not take place in Marvel Comics UK continuity, despite being reprinted in the UK book.)
- Though not a Transformer, Serpentor's figure was notorious for Gold Plastic Syndrome. To this end, there were reports of brand new figures taken out of the package and disintegrating almost immediately. Yo Joe?
- When you think about it, Serpentor and Galvatron are alike in some ways. They are both evil dictators, they are mentally unstable, and they have a hatred for seconds-in-command who happen to have the same voice. The difference is that although Galvatron is Megatron reformatted, Serpentor was created from DNA of historical tyrants.