Brawl is a Decepticon with the role of Ground Assault who is a noisy, irritating, bad-tempered but strong and effective warrior (according to his Tech Spec).  He transforms between his robot mode and his tank mode and is one of the five Combaticons that combine to form Bruticus.  In the original Transformers cartoon series Blast Off is designated as the left leg of Bruticus, but as a toy can be used as the right leg or as an arm. 

The Generation 1 Brawl was available individually in 1986 and was also available in the Bruticus gift set in Japan and Italy during the same year.