Daphne Papas

 was the head of the Space Security Service who wanted the First Doctor and Steven Taylor killed until the Doctor convince her not to. She had to combat the Sontarans. She went with the Doctor to the TARDIS. She was hit by a Sontaran weapon when trying to capture the TARDIS back from the Sontarans. She told the Doctor about the plan to destroy a Sontaran weapon. Travelling through the planet she had to attack a second group of Sontarans. She thought it was pointless that she was the only person from her squad to survive. She admired Sara but knew she had gone wrong. (AUDIO: The Sontarans)