 Despite being announced as the actress to portray the new companion , Jenna @-@ Louise Coleman had first appeared as two different characters , called Oswin and Clara respectively , in " Asylum of the Daleks " and " The Snowmen " , but " The Bells of Saint John " introduces the character who will be the Doctor 's travelling companion . Coleman played each version of the character as individuals with " trust that there would be a payoff " to her mystery . Moffat described this version of Clara as " more real @-@ world " , and Smith stated that Clara " reignites [ the Doctor 's ] curiosity in the universe and gives him his mojo back " . 
