Megatron's bane

(RWBY x cyberttonian reader x Transformers) In the events of the fall of Cybertron there was a Decepticon who served as Megatron's bodyguard but that Decepticon had no name wich it angered the bodyguard and since Megatron almost never paid attetion to him the nameless Decepticon started to work with the Autobots in secret and sabotage the Decepticon faction without being discovered not even by the eyes and ears of the Decepticons also known as Soundwave could find him and discover the traitor's intentions and when the time came for the Autobots to leave Cybertron it also the same time for the nameless decepticon to face his demons.Once it was done the Autobots and the newly recruit Autobot who he named himself Hammerhead will work on their survival until the Ark crash lands on a planet called Remnant