Microman is a line of toys manufactured by Takara (known as TOMY in English and K.K. Takara-Tomy [株式会社タカラトミー ] in Japanese since 2006 ) from 1974 to the present. Microman toys were originally imported to the United States by Mego Corporation as Micronauts until the company went bankrupt in 1982. Some of the toys later became a part of the first line of Transformers.

The line of toys consists mainly of small 3.75" action-figures that are known for their high number of articulation points, averaging thirty, relative to other toys of similar size. The toys include vehicles and robots, and interchangeable parts that can be transferred from one toy to another.

Source: Wikipedia