Ood (Pond Life)

This Ood was rescued from the Androvax conflict by the Eleventh Doctor. While on his way back to the Ood Sphere, the Doctor briefly visited Amy Pond and Rory Williams in Leadworth. The Ood wandered out of the TARDIS and ended up in Amy and Rory's bathroom. A month later, the Ood was still with them, convinced that it was their butler. The Doctor eventually returned it to the Ood hivemind. (WC: Pond Life)