Tia Karim
Colonel Tia Karim was a member of UNIT who worked with the Shansheeth in order to travel the stars in the Doctor's TARDIS, as there was 'nothing left for [her] on Earth' - though what drove her to this point of view is never revealed. To reach her goal, she acted as a representative chosen to inform Sarah Jane Smith of the death of the Doctor. Once she accepted to come to the funeral, along with Rani Chandra and Clyde Langer, Tia showed them around the UNIT base. She succeeded in locking Rani, Clyde and Santiago in part of the base, and attempted to literally roast them by trapping them in the air conditioning and turning the heat up to maximum, though they were saved by the Doctor. When Sarah Jane and Jo were later captured by the Shansheeth, Colonel Karim activated the Memory Weave to create a new TARDIS key from the memories of Jo Grant and Sarah Jane, intending to allow her and the Shansheeth into the TARDIS. Encouraged by the Doctor to remember all of their adventures, however, Jo and Sarah Jane overloaded the Weave. The Weave subsequently went critical, initiating a countdown until it blew up. Sarah Jane and Jo survived by hiding in the lead-lined coffin, and despite begging to be saved as well, Tia Karim was left in the room, and died when the Weave exploded. (SJA: Death of the Doctor)
