Place of Origin:
Sergeant Mitchell was a trooper under Lieutenant Scott who went down into a cave system to investigate the disappearance of Professor Kyle’s expedition in 2526.
After Walters lost contact with Baines and Collis, Mitchell, along with Carter and Bailey, went to investigate. After Carter found Snyder’s remains, Mitchell radioed to Walters, but Mitchell, along with Bailey and Carter, were killed by the Neomorph Cybermen’s androids. (Earthshock)