In 1986 Hasbro and Takara were heading into new territory, the first year in which most of the Transformers would be newly developed toys. Early work on some molds was done using existing toys, kit-bashing actually. This year Autobots would get their own assortment of cassette warriors. Using conceptual moldings, some leftover Frenzy pieces, and a few Diaclone stickers, they created a Eject mock-up.
The toy would be finalized just a short time later and shown at Toy Fair in it's final form.