The Transformers: Hearts of Steel staunch ally of Muldoon after the Decepticons betray him. Only four Autobots were mentioned by name in the series: Bumblebee, Ironhide (in the TPB when he gives his name it was changed to Sideswipe) and Optimus Prime although he did not appear, though others are recognizable as G1 Generation 1 characters, introduced as toys in 1984. The opposite is true for the Decepticons, with many being named. Others are left unnamed but are recognizable such as Ravage. In addition to their original alternate modes as fantasy beasts, the Transformers later adopt alternate modes appropriate to the era in which they
Transformers: The Headmasters Transformers: The Headmasters Initially, Takara, the Japanese producers of the "Transformers" toyline, imported the American "Transformers" cartoon series from 1985 to 1986. When the series came to an end with the three-part miniseries "The Rebirth" in 1987, however, Takara decided to continue the series themselves, declining to import "The Rebirth" and instead creating a full-length 35-episode spin-off series, "Transformers: The Headmasters" (two additional clips episodes were produced after the fact for direct-to-video release). Supplanting "The Rebirth"'s position in Japanese continuity, "The Headmasters" occurred one year after "The Return of Optimus Prime", introducing the title characters to the Transformers universe in