Melinda-Catherine Gross was one of the players and producers of The Game of Rassilon. In the show, Gross plays as Amelia Earhart (aka "Millie").
Gross appeared in every serial of the first season, although Millie was not a participating character in Hard-Wired and Gross herself is only occasionally heard in the background. In October 2019 it was announced that she would not be returning for the show's second season.
Outside of her work on the show, Gross is also a writer who has worked on projects including Drunk Hawk Man and Rivendell.