Head: Star Wars Clone
Torso, arms, upper legs, strap: 50th Storm Shadow
Lower legs: Retaliation Storm Shadow
Feet: HACKS
American Defense was a line of 3 3/4'' military toys sold exclusively at Kmart in the eighties. The line started with Galoob's A-Team molds and Remco grew it from there. It was later produced by different companies and ended up in dollar stores and discount outlets. Similar to GI Joe, it included a wide variety of colorful characters. However, without a cartoon, comic or any marketing to back it up, the line rode GI Joe's coattails for a while and then disappeared.
Karate King came about by accident. While doing research for American Defense, I noticed that with a few parts swaps and paint accents, 50th Renegades Storm Shadow could be converted to Karate King in just a few minutes, so I dove in.