The Ood are set to return to Doctor Who in the second special of the year. An Ood was spotted on set for filming that took place in Newport this morning. David Tennant, Lindsay Duncan were also seen on set, as well as a robot. The Ood first appeared in Doctor Who in the series 2 episodes The Impossible Planet and The Satan Pit and then later in the series 4 episode Planet of the Ood. You can see pictures from filming here, here, and here.