Doctor Who: EVERY NuWho Villain And Monster Ranked Worst To Best

188. Chagaska

Appears in: Can You Hear Me?

Created by the immortal Zellin from Tahira's nightmares, the Chagaska took Tahira's patients and transported them to a space station where Zellin induced nightmares to feed his fellow immortal Rakaya.

Eventually, Tahira conquered her fear and took control of her Chagaska, which she and the Doctor then imprisoned inside the geo orb along with Zellin and Rakaya for all eternity. Probably.