Oh, hello.” Those two words, from the person Ncuti Gatwa‘s Doctor regenerated into in the Doctor Who Season 2 finale, kick off a slew of questions we now have. Because that person? Billie Piper, very recognizable to fans as Rose Tyler,

The season finale of Doctor Who, ‘The Reality War,’ was shocking for many reasons. However, the biggest surprise involved an appearance by actress Billie Piper, who played Ninth and Tenth Doctor companion Rose Tyler.

With Doctor Who’s explosive May 31 series finale majorly hinting at Billie Piper taking on the iconic role of the Time Lord, fans may be stunned at what the actress once said about women playing the famous protagonist.