Diaclone was a toyline by Takara Toys launched in 1980.
It consisted of transforming vehicles and robots piloted by miniature, magnet-shoed figures spun off from the prior Microman toy line that were in turn called an Inch-Man. Unlike Microman, which featured "full-scale" toys of its 10 centimeter tall alien cyborgs, the figures in Diaclone represented full-sized human (and enemy alien Waruder ) pilots, and were in approximately 1/60th scale. In 1982, the line later featured the Car-Robots set of transforming robot toys. While the original series featured fanciful robots and vehicles, Car-Robots added the feature of the robots being able to disguise themselves as various late 20th century-era contemporary vehicles. In 1984, Hasbro licensed the Car-Robots toyline along with the Microman "Micro Change" toyline from Takara and merged the two series of toys to create the Transformers. Most of the original Autobot vehicle-based characters came from the Car-Robots set of Diaclone robots. Other Transformers characters that came from the Diaclone line included the Dinobots, Insecticons (from the enemy Waruder toys), the Decepticon planes (originally from 2 "JetRobo" toys, produced in the colors of future Decepticons Starscream and Thundercracker) and the Constructicons, who also came from the Car-Robots set. The Constructicons came from near the end of the series, at which point Takara was starting to abandon the Inch-Man pilot figures and being limited to the 1/60th scale. Takara eventually discontinued the Diaclone and Microman toylines in 1985 in favor of the more successful Transformers rebranding.