Megatron is a Decepticon from One.
The humble energon miner known only as D-16 was a stickler to protocol, a Megatronus Prime fanboy who believed strict adherence to the system and its rules would one day allow him to ascend to greater heights. His attitude often served as a reality check and grounding presence to his best friend, the bold and adventurous Orion Pax. However, after experiencing events that left his entire worldview turned upside down, D-16 would embark on a path consumed by anger and revenge... a path that corrupted him into a despotic villain even worse than the one he rose up to fight against. A villain called Megatron.