10 Big Stars You Forgot Appeared In The World Of Doctor Who

10. Brian Cox

David Tennant's final 2-parter The End of Time was a big deal. Airing over Christmas Day 2009 and New Year's Day 2010, it was complimented by Tennant guesting on popular BBC panel show QI and specially commissioned idents before each programme on BBC1. Not only that, but the production team secured two huge stars to join Tennant, Bernard Cribbins, Catherine Tate, and John Simm for the big finale.

One of these was former Hannibal Lecter, and future Logan Roy actor Brian Cox, as an Ood. Or, more accurately, the voice of an Ood. Brian Cox would likely channel Logan Roy's catchphrase if asked to don the Ood prosthetics. It's a brief voiceover role as the Elder Ood, but the actor brings the required levels of gravitas to their portentous warning.

"It is returning, and he is returning, and they are returning" set the tone for the momentous end of part one cliffhanger, that revealed the impending return of Gallifrey and the Time Lords to bring the RTD/Tennant era to close. Years later, Cox would bring lashings of "piss and vinegar" to his role as Doctor Who's Canadian impresario creator Sydney Newman in Mark Gatiss' excellent docudrama about WIlliam Hartnell.