Monstructor is a Decepticon with the role of Super Warrior. He is formed when the six Monster Pretenders: Icepick, Birdbrain, Bristleback, Slog, Scowl and Wildfly combine together. Monstructor is a "metal-mashing menace" who has some very impressive abilities such as being able to corrode metal with his touch and using his solar fission cannon (which harnesses the power of the stars) to destroy anything in his path (according to his Tech Spec).

The six Monster Pretenders that combine to form Monstructor were released individually in 1989.