Bonecrusher is a Decepticon who transforms between his robot mode and his bulldozer mode.  He is one of the six Constructicons (along with Hook, Long Haul, Mixmaster, Scavenger and Scrapper) who combine to form Devastator, Bonecrusher transforming into the left arm of the giant robot.

His function is Demolitions and he is the strongest of the Constructicons.  True to his role Bonecrusher's motto is "Hit it till it stands no taller than dust" (according to his Tech Spec).

The Constructicons were released individually in 1985.  They were also available together in the Devastator gift set during the same year.