There was a whole line of Rockman gear.
You had the Rockman / Bassman and the Rockmodules.
http://www.geocities.com/rockman_gear/index.html
There was a whole line of gear developed, now it's manufactured by Dunlop and called "Ace"
For the record I have both a Rockman and a Bassman, and I love them. They preserved the harmony among room mates and neighbors for years. I've moved twice since I saw them last and I REALLY need to find them!
Yes you do:) LOL