Kay Eaton was a science fictionwriter who wrote under the pseudonym of "K.C. Hunter" in the 1950s in order to conceal the truth, from the more conservative elements of that era, that she was in fact a woman. She is best known for her work on the New York based Incredible Tales magazine.
Kay often worked in conjunction with her husband Julius Eaton and the two had something of a reputation among the magazine staff for turning out slightly sentimental stories, particularly by Herbert Rossoff. Because she was a woman, and consequently discriminated against, Kay felt some solidarity with Benny Russell, the staff's only African-American writer.
Kay Eaton was played by Nana Visitor, who usually portrayed Kira Nerys. Ronald D. Moore once remarked, "K.C. is not a literal translation of Major Kira. But it [the episode 'Far Beyond the Stars'] was written in such a way where you could see where Benny Russell would have used her as an inspiration." (Cinefantastique, Vol. 30, No. 9/10, p. 125) Visitor described her experience of portraying the character; "Personally, I felt like [wise-cracking star] Eve Arden, and it didn't feel good!" she laughed. (Star Trek: Deep Space Nine Companion, p. 535) At the time "Far Behind the Stars" was filmed, Visitor was married to Alexander Siddig, who played Kay's husband Julius.
Kay Eaton appears in the novel Star Trek: Typhon Pact: Raise the Dawn as a vision experienced by Kira, where she helps Cassie rescue Benny Russell after his transfer to prison, the vision inspiring Kira to save Sisko by seemingly sacrificing herself.