First released in 1974, Microman was the first line of poseable 3.75" figures. Robotman, the first toy to transform from a robot to a vehicle, was added to the line in 1975. Thus Microman's impact on the global boys' toy market, little-known outside Japan, can scarcely be overestimated. In 1983, a new "Microchange" theme was introduced, under which all but a few of the robots and vehicles made to interact with the figures would have the ability to disguise themselves as ordinary household objects. The next year, these would end up in North American and European markets as part of Hasbro's Transformers line, and at the end of 1984 Takara canceled both Microman and Diaclone in favor of reimporting the Transformers with their new animated series (which these lines both lacked).