I found this site for Battle Beasts and then noticed the M.U.S.C.L.E pages too.
I think I have a #2 blue, #101 flesh, #211 magenta, #215 blue
I know me and my brothers had what seemed like maybe 100-200 of these when we were little. If and when I find the mother lode I'll post them for sale. I have only found 4 so far while I was searching for battle beasts.
I'd rather sell/trade these to somebody who collects them if anybody is interested. Ideally I'd trade this for anything battle beast related.