Tryska

Commander Tryska was a subordinate of Jastrok and sister of Kalana.

Biography
Jastrok sent Tryska to a Silurian research base in Greece to recover a fear trigger, a mission which was complicated by the presence of UNIT. She killed the soldiers standing outside and followed Kate Stewart and Petronella Osgood, poisoning the former with her tongue and using the fear trigger on the latter before hunting her.

When Sam Bishop arrived, Tryska fought him, but the fear trigger was damaged. She was taken captive and had a scrap of her uniform forced in her mouth to keep her from poisoning Sam, but she managed to escape and got Jastrok's permission to activate the base's self-destruct system. She blocked Kate, Osgood and Sam's way when they tried to escape and fought Sam once again, after which he planted on a device on her which attracted snakes, allowing them the time to escape. Tryska was killed in the base's explosion. (AUDIO: Retrieval)

Legacy
Kalana found Tryska's body and recovered the damaged fear trigger, swearing to get revenge for her sister should she ever encounter Kate, Osgood and Sam. (AUDIO: Retrieval)

After arming nuclear warheads, Kalana had the opportunity to get her revenge for Tryska and fought Josh Carter in single combat. She was ultimately defeated and imprisoned with Jastrok. (AUDIO: United)