In an occasional series, the Who's He? Podcast talk about those people who have travelled with the Doctor over the last 50 or so years - the companions. Those people who have stepped through the doors of the TARDIS and have seen the wonder and the dangers of travelling in time and space.

In this edition, Phil is joined by Erika Ensign from the Verity Podcast and Stephen Schapansky from Radio Free Skaro who have selected as their favourite companion, Clara Oswald. They discuss why Clara is the perfect companion, just how important a strong character such as hers is to keeping Doctor Who fresh and they both pick the moments that defined Clara for them.