Pearl Mackie, who played Doctor Who companion Bill Potts in the show's 10th season, isn't ruling out a return to the series. Mackie made Doctor Who history by playing the franchise's first openly gay companion when she joined Peter Capaldi's Twelfth Doctor in the TARDIS. That legacy remains meaningful to her years later. While Doctor Who is in the process of saying goodbye to two companions and welcoming a new one, and rumors swirl about Jodie Whittaker's departure from playing the Thirteenth Doctor, Mackie talked about possibly returning as Bill. While one of her predecessors seemed against the idea of her own comeback, Mackie's not ruling the idea out.