i dont know about the comics
In the cartoon it was a human who controlled doubledealer (his name was Clouder in the show) like a mech. He started as a decepticon but switched over to the autobots.
The human itself had 2 suits that he wore. One was a decepticon suit (skar). And the other suit was an autobot suit (knok).
Here's picts and bio:
https://tfwiki.net/wiki/Clouder
tfwiki is a better place to start for character info than a message board. Lots of info and picts there.