Chances are, somewhere along the line, you had a toy from Mego. Micronauts, Eagle Force, Black Hole, and of course the well known 8 inch cloth outfitted Marvel and DC Heroes.
Mego - Action Figure Toys by John Bonavita - is another great resource for collectors. Lots of photos and priced guides to boot - and published in 2007.
You can purchase this book on Amazon for $19.95 or used for about $12.