A four-issue limited series by Marvel Comics, featuring expanded Tech Specs entries for the Transformers that had appeared thus far in the comic and toy lines up to that time (1986). Organized alphabetically, with the exception that characters who first appeared in Transformers: The Movie were held until Issue 4.
- Issue 1: Features entries from Air Raid to Grimlock.
- Issue 2: Features entries from Groove to Ramjet.
- Issue 3: Features entries from Rampage to Swindle.
- Issue 4: Features entries from Steeljaw to Windcharger, plus Transformers: The Movie characters from Arblus to Wreck-Gar (includes several non-toy characters).