See also Edit
Background information Edit
In the first draft script of ENT: "Fusion" (which had the working title "Equilibrium"), Trip Tucker mentioned to Fraht that, for Halloween during Trip's childhood, he had usually dressed up as either an alien or an astronaut. Fraht, having been wondering what to wear for an upcoming Halloween party aboard Enterprise NX-01, reasoned that, among Humans, he actually was an alien, so Tucker advised him to attend the party just as he was.
A deleted scene from TOS: "Return to Tomorrow" had Spock compare sharing his consciousness with Christine Chapel, a woman, to being in the mind of an alien. Ann Mulhall, amused, then referred to Chapel as her fellow alien (female). (Star Trek: Lost Scenes)