appeared in a number of roles in various Trek productions since his first part as a Klingon in The Next Generation episode "Heart of Glory"; by the end of the Enterprise run, he had appeared as 13 different characters in total. Randy Oglesby, Rick Worthy and Scott MacDonald had also appeared in a variety of roles within the franchise before taking on the recurring parts of Xindi council members throughout season three. Throughout the production on Enterprise, there were rumours that William Shatner would make a guest appearance. During season four, this idea was raised once again with the Reeves-Stevens suggesting that the tantalus field (previously thought to be a raygun) seen in The Original Series episode "Mirror, Mirror" actually sent its victims back in time to a penal colony in the regular universe. This in turn would allow Shatner to reprise his role as the Mirror Universe version of Captain James T. Kirk. Shatner pitched this to Braga and Berman, but instead they pitched another idea back to the actor in which he could play the chef of the Enterprise, who was taken to the future by Daniels and required to impersonate Kirk. After they could not settle on an idea, the Mirror Universe concept was reworked into the two-part episode "In a Mirror, Darkly". Sets and filming The majority of the filming took place on the Paramount Pictures lot in Los Angeles, California. The temporary sets for the show were housed on stages 8 and 9; while the permanent sets including the bridge, engine room and the arsenal were located on stage 18. The engineering set itself was built across two levels with the large warp drive taking up the majority of the space. Stages 8 and 9 had housed sets for the earlier Star Trek series since production was started on the abandoned Star Trek: Phase II during the late 1970s. They were subsequently used for the films Star Trek: The Motion Picture, Star Trek II: The Wrath of Khan, Star Trek III: The Search for Spock and Star Trek IV: The Voyage Home before being used for The Next Generation and Voyager. Stage 18 had not been previously used for the production of any Star Trek series or films. During the course of filming the pilot, between 130 and 150 members of staff worked on constructing the sets; this reduced to 20 to 25 crew members