Brawn is an Autobot who transforms between his robot mode and his jeep mode.  He is one of the Minibots, named so because of the small size of the Transformers belonging to this group.  His role of Demolitions suits him well as he is one of the strongest Autobots who can knock down a building with a single punch.  Brawn is also the most macho of all the Autobots and loves a challenge (according to his Tech Spec). 

The Generation 1 Brawn was released in 1984.