"The Captain" and "the Vulcan" politely request that they be referred to by name, or at the very least, the appropriate pronouns.

Yes! That! So do the Scientist and the Pilot! I was reading a fic where John and Rodney were having sexytiems in a plane (that John wasn't flying, it was a declassifcation fic) and suddenly I read "the pilot" and I thought the pilot had discovered them and decided to join in!