The Alternate

Mora Pol was originally to be played by Rene Auberjonois himself, much as Data's creator Noonian Soong was played by Brent Spiner, and as The Doctor's creator Lewis Zimmerman would later be played by Robert Picardo, but this plan was scrapped when it was realized how much time it would take each day to get Auberjonois out of one make-up and into another. Most DS9 episodes were shot in 7 days, but it was estimated that with Auberjonois playing both parts it would take at least 14 to complete the shoot.

Dr. Mora at one point says "Dear God, what have I done?" As a Bajoran, his religion does not contain a God, rather a whole pantheon of prophets. A more accurate phrase would have been "By the Prophets, what have I done?"