Ben Browder's wife, Francesca Buller, has played four different guest starring roles to date on Farscape: M'Lee in "Bone to Be Wild"; Ro-Na in "Look at the Princess" and Raxil in "Scratch 'n' Sniff", all three as antagonists to John Crichton. In the Fourth Season, she came back again as War Minister Akhna, another antagonist.
Jonathan Hardy, who voices Rygel, makes his first and only onscreen appearance in the series in the 3 episodes that form the 'Princess' trilogy. He plays Kahaynu, Moya's builder.
Part 2 and part 3 of "Look at the Princess" are the only times in which the ship Moya is given a voice. The performer who supplied Moya's voice was not credited and has not been identified.
The 'Princess' trilogy was originally written by David Kemper as a two-parter. However, after filming, there was about 18 minutes of footage left over, all of which was considered good enough to be aired. The decision was then made to expand the story into three episodes. Kemper wrote 11 extra scenes and threaded them throughout the existing story in only 3 weeks. The bulk of the new scenes are found in the middle episode "I Do I Think".