Last time on SG-1, we met the first of the Ascended Beings, and this time, we meet a new alien race, some Mayan mist-creatures. The end credits of the episode name the one we meet as Quetzalcoatl; a subsequent Stargate novel calls the species Omeyocan.
Our son insists that they look the same to him. We protested that Quetzalcoatl is a giant man made of smoke with a stark white inhuman face, and Oma Desala was a shining being with tentacles of light and the human face of an actress. If he can’t tell the difference between those two after just three days, it’s no darn wonder the kid can’t recognize Duncan Lamont after a week!