Megatronus - The Fallen

After the tragic death of Solus, Megatronus slowly slipped further and further in to madness, he began questioning all things. His principles, his beliefs, everything he was eventually eroded and soon his very will to live was long gone. He wished for the end and in his weakest state, on the verge of death is when it finally decided to take advantage of he who was now barely a husk of his once glorious self.

A strange nameless seemingly sentient being of pure energy merged itself with Tronus'; weaving itself through his entire being, both mind and body, possessing him, controlling him and making him in to something far different than he was before.  While he was truly powerful at one stage this was different, now his very body emanated a burning heat and all he could feel was hate.  Life itself was no longer of consequence, he would now seek only destruction and chaos and the more he lusted for all to be destroyed the more he burned and the greater his power grew.   

He had become The Fallen one.