What is a Transformer? "A toy that through a series of changes can alter its form from a vehicle to a robot." This ground-breaking book, now in its new and improved second edition, presents these incredible changing figures of the 1980s and '90s in over 500 color photos with descriptions and an up-to-date price guide. The history of these toys is presented, from the early Diaclone™, Diacrone™, and Micronauts™of Japan through the emergence of Hasbro's™ Transformers™creations to the Transmetals™ and Fuzors™ of the late nineties. This immensely popular guide belongs in the library of every action figure collector.