Companion (Worlds in Time)

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A companion of the Eleventh Doctor travelled with him to countless worlds, including Earth, Ember, and Messaline.

The companion's gender and species varied, as various tellings indicated that they were either a human, a Silurian, a Catkind, or a Tree of Cheem.

They encountered many species, including Autons, Clockwork Droids, and Zygons. (NOTVALID: Worlds in Time)

Behind the scenes