Once upon a time, there was a Seeker named Greywing. Greywing's bestest friend was another Seeker named Excellion. Excellion was a kind soul for a Decepticon. In fact, his goal in life was to bring some degree of compassion to Decepticon ranks. As one could guess, this was a terrible idea. Megatron told Starscream that he was not to tolerate weakness in his Seekers, and in one fell swoop, Starscream brought Excellion offline. Leading up to this point, Greywing's faith in the Decepticon cause was thinning. This was the last straw. Greywing soon defected to the Autobots, undergoing intense modifications to leave behind as much of his Seeker heritage as possible. Greywing took on Excellion's life views after his death, and became a compassionate, if not rather depressed, spark.