Tzim-Sha

"Tzim-Sha! Soon to be leader of the Stenza warrior race, conquerors of the Nine Systems."

- Tzim-Sha introducing himself to the Doctor

Tzim-Sha is the main antagonist of the 2018 Doctor Who episode "The Woman Who Fell To Earth".

He was portrayed by Samuel Oatley.

Biography
He is a member of a race of alien warriors called the Stenza. In order to become the next leader of his race, Tzim-Sha was sent to Earth to find a human trophy without the use of weapons or assistance and bring them to his planet. However, Tzim-Sha cheated by using a swarm of gathering coils to locate his trophy: a man named Karl Wright.

Tzim-Sha arrived in the English city of Sheffield in a pod after being accidentally summoned by Ryan Sinclair. The pod (with Tzim-Sha still inside it) was taken by a man named Rahul (whose sister had been taken as a trophy by the Stenza seven years previously) who took it to his garage.

After Tzim-Sha emerged from his pod, Rahul demands to know what happened to his sister to which Tzim-Sha says that he will never know, before freezing Rahul to death and taking one of his teeth as a prize. He then fleed the garage just as The Thirteenth Doctor, Ryan, Yasmin Khan and Graham and Grace O'Brien arrived. Tzim-Sha later encountered a drunk man, who mocked his armour (believeing it to be a Halloween costume) and threw salad at him. Tzim-Sha responded by killing the man and taking one of his teeth.

Tzim-Sha was later confronted by The Doctor and her companions who saw that he had placed his victims teeth on his face. The Doctor attempted to get Tzim-Sha to leave Earth, but he refused and absorbed data from the gathering coils and used a short range teleport to escape the group and arrive at a construction site where Karl worked aa a crane operator.

Upon arriving at the construction site, Tzim-Sha killed the site's security guard before climbing up the crane Karl was operating. He later stopped Karl from jumping from his crane onto a neighbouring one where the Doctor was and started to drag him away. The Doctor jumped across and went after him and threatened to destroy his recall device (which would allow him to return home) if he did not release Karl.

Believing that the Doctor was bluffing, Tzim-Sha detonated DNA bombs that the gathering coils had placed in the Doctor and her companions eariler, only to discover that the Doctor had transferred the bombs into the coils' data, which Tzim-Sha had downloaded.

Because of this, Tzim-Sha released Karl and took back the recall device, only to be kicked off the crane by Karl. However, Tzim-Sha was able to teleport away before he could hit the ground.