James Gunn said in an Instagram post in August 2017 that Farscape (1999) was one of his all-time favorite sci-fi shows. When he ran into the show's star, Ben Browder, at the Saturn Awards, he asked him if he'd make a cameo in Guardians of the Galaxy Vol. 2 (2017). He agreed and can be seen as the Sovereign admiral with Ayesha.
James Gunn was asked on Twitter in 2016 if he had ever seen Farscape (1999), as it had some similarities in terms of character. He replied that of all television shows, Farscape was the one that influenced Guardians of the Galaxy (2014) the most.
Ben Browder is a huge sci-fi fan, just like John Crichton. His participation first on Farscape & later on Stargate SG-1 (1997) is like a dream come true for him.
Originally Gigi Edgley's character Chiana was supposed to be killed off after a few episodes. But the producers liked her so much they changed their minds and made her a regular cast member.