The vision of a white male does not include black human beings. Instead blacks are usually stereotypical space niggas-big black bucks and wenches. This place is dedicated to revealing that fact. Take Teal 'c of Sci-fi's SG-1. He is big, black, muscular, independent and intelligent. A real man, except he's an alien. If he were human, he wouldn't be in the series. Hell he wouldn't even be on t.v. for long. (Captain Cisco, where are you? I could even take the other characters questioning your leadership unendingly now.) Take Ronan and Taylor of SG Atlantis, cookie cut from the same mold as Teal'c. Such stereotypes. But of course they must always genuflect and defer to their white massa--I mean team leader, captain or base commander.
And then there is the archetype of white sci-fi imagination, Uhuru. Her name means freedom in Kiswahili. But she never exhibited any. Created during the racist hot bed of the 60s, hers was among the shortest skirts of television and biggest breast-cleavage ratio going. She stood on the bridge and looked pretty for Kirk while flashing her famous legs occasionally.(Remember the pseudo strip tease in The last frontier movie--it proved their sexual fascination with her.) A piece of meat was all she ever was.
But let us not forget the foundation of the image of the future black humanoid. The original Klingons who were white folks in black face who could not control their emotions.(white folks only because they refused to pay niggas like they refused to pay Native Americans during that era to play themselves.) They were savages, pure muscle, and the absolute 'Iggas of the galaxy.