The Steel Brigade was first available in 1987 as a mail-in offer from Hasbro Direct. The offer was hyped as a "personalized" figure, and came with a personalized bio certificate. It essentially was a figure made up of repainted parts from other figures with the head being the only original piece.
From the years 1987 through 1994, Steel Brigade figures were offered off and on from Hasbro Direct. As the years passed, different parts of different figures were recolored and used to create new variations of the Steel Brigade figure.