The 1988 series of toys kicks off with Powermaster Optimus Prime, who introduces a new play feature to Transformers. The Powermasters follow on the heels of the previous years' Headmasters and Targetmasters. In this incarnation, the smaller partner turns into an engine block that "unlocks" the transformation from vehicle to robot. In Japan, this play feature was called Godmasters, and was rooted in a different mythology than the US storyline, which at this point was only continuing in comics as the animated series had stopped producing new stories. Powermaster Optimus Prime is the first new Prime toy since his death in 1986's animated movie, a demise that was undone with his resurrection in the animated series. Powermaster Prime still turns into a cab over engine semi truck and trailer, with his ultimate mode being a combination of truck and trailer into a massive robot. His Powermaster parter (inset) in this release is Hi-Q. In Japan, this toy would be released as ...