WTF is up with that new Arcee Transmutate mold? It looks sad!
Transmutate's a little hard to explain. Basically, she was a bot that arrived on earth as a protoform, but was heavily damaged. She was incredibly powerful, & BW Megs sought to destroy her, but Rampage, strangely, felt pity for her. His pity came from his own pain, as he was an experiment gone wrong. The Autobots(or Maximals, not sure on how old he was) tried to replicate Starscream's indestructible spark with Protoform X.
"Twisted and warped, Transmutate is a Transformer in name only. The damage done to it by its troubled birth has rendered it unable to transform and reduced its mind to infancy, leaving it utterly innocent in personality and able to grasp only simple concepts. Its trusting and curious nature is both a boon and a handicap.
Transmutate's distorted frame conceals almost unbelievable destructive power in the form of a super-sonic scream which can leave all but the hardiest victim out cold. Its simple mind means that many of its capabilities remain unknown, even to itself, and it will express surprise when, for instance, it finds it has the ability to flyyyyyyyyy."
http://tfwiki.net/wiki/TransmutateSo, that Protoform X that is coming out, is pre-earth/Cybertronian (BW) Rampage, & is the free figure for joining the Transformers Collectors club. Transmutate(which looks to be only a repaint of TFP's 1st edition Arcee) is a companion figure you can purchase from the club. Nothing is known about Transmutes past, atleast, not yet. So, whatever life Transmutate had on Cybertron, this is her Cybertronian form. Since (BW) Silverbolt also befriended Transmutate, it makes me wonder if they'll do a Cybertron version of that Silverbolt.