- Creator Backlash: Rene Auberjonois was initially not happy that Odo finally learns his origins and finds his people. He had become interested in the role because of Odo's uncertainty about his past and felt exploring that robbed the character of underlying mystery and vitality. However, Auberjonois came around when he understood the full potential of Odo's people being the leaders of the Dominion:Rene Auberjonois: What it did was make the character more complex. It just added to Odo's angst and to his depth, and it made him more challenging and interesting to play. And the fact that he ultimately comes to understand that he can't go back to his people, that he can't go home again. They opened up more avenues for me to travel as an actor.
- What Could Have Been: Eris was supposed to return, but her actress was unavailable. The showrunners also decided that having to run it by one character every time the Defiant wanted to use the cloaking device was too much trouble, and the character of T'Rul was dropped. (It was originally meant to be used sparingly, but they wound up leaning on it heavily.)
- Xanatos Gambit: Invoked by the creative staff. Traditionally, Trek villain races are introduced one at a time, and if audience response is poor, they're simply never seen again. For the Dominion, it was decided to have it be represented by three species and introduced in the same three-parter, in order to test viewer reaction. Fortunately, the audiences reacted very well to the Founders, the Vorta, and the Jem'Hadar.
- You Look Familiar: Salome Jens (the female Founder) previously appeared as the unidentified alien woman whose people gave rise to all other intelligent life in the Milky Way.
Trivia / Star Trek Deep Space Nine S 03 E 02 The Search Part II