What is "monsterbots"

The Monsterbots (known as the Firebots in Japan) is the name for a sub-group of three fictional characters from the Transformers universes. Released in 1987, the unifying characteristic of the three Monsterbots - Doublecross, Grotusque and Repugnus - is evident from the group's name: they all transform into monstrous creatures of various types. This was particularly unusual for Autobots, and the commercial advertising the toys even went so far as to suggest that their monstrous natures had come about as the result of some accident during their creation. Additionally, all three figures could shoot streams of harmless sparks when a button on their bodies was pressed, simulating "fire breathing" abilities.