Full body: BFS
Cape: Cobra Commander
Ming the Merciless is the main villain of Flash Gordon and the Defenders of the Earth. He is the ruler of the planet Mongo.
The Defenders of the Earth are formed after Ming the Merciless kills Flash Gordon's wife. Flash is then joined by The Phantom, Mandrake and Lothar to battle Ming and do as their namesake says and defend the Earth.
The Defenders of the Earth was another team that I always wanted to crossover with GI Joe and easily could have. As a kid in my massive universe I created in my mind the Defenders helped Joe with Cobra and the Joes helped battle Ming's forces and save the Earth on numerous occasions.
I've included some pictures with the rest of the Defenders of the Earth customs.