Payload is the Joe Team's original astronaut and remains one of the best space themed molds Hasbro ever produced. The original version has the best coloring on the mold. But, all three uses of the mold (1987, 1989, Brazil Orbita) are hard to find and somewhat expensive. Here's the best of him from around the web.
Payload Pre Production Figure at YoJoe.com
Payload Variant at JoeDios.com 1
Payload at 3DJoes.com
Payload at JoeDios.com 2