Doctor Who: Every NuWho Companion Ranked From Worst To Best

22. Lady Christina De Souza

While Planet of the Dead is perhaps the weakest of the 2009 Doctor Who specials, Michelle Ryan's Lady Christina De Souza brought a cheeky fun to the episode that had been somewhat lacking in previous installments. With the impending knowledge of David Tennant's departure from the role, a heavy weight was on the show.

Thankfully, the episode is a light and fun affair. That is perhaps its weakness in terms of where it lands in the series - the next episode is the horrific Waters of Mars - but, as a stand-alone, it a great adventure.

Lady Christina seems to be always one step ahead and could very well return to the show - never say never!