This “Amorphian Being” who appears in an instructional is Harvey Korman’s second appearance in the special. You see, Amorphians look like Humans, but they have random physical defects that make them slow down, speed up, do the chicken dance, or stop functioning altogether. Whatever maximizes comedy value. So it gives Korman a chance to show off some of the physical comedy that he was known for, but like most things in this special, it misses the mark and goes on way too long.
I would bet my entire fortune that someone has at some point made a custom figure of Dromboid. And the existence of that one custom is sufficient for the rest of us. He seems more like something from The Jetsons than Star Wars.