Bill Potts (Pearl Mackie)
Bill Potts is the Doctor’s newest companion introduced in Season 10. She is a university canteen worker, who sneaks into the Doctor’s lectures. The Doctor finds her interesting and decides to become her Tutor.
Her interest in women came up first when she told the Doctor about a girl (Heather) she always gave extra chips to, in order to get her to notice her, until eventually she realized she had made her fat. “Beauty or chips. I like chips.”
Later on during the episode Bill met Heather at a bar and they seemed to hit it off. She saw Heather again on campus, when Heather showed Bill a mysterious puddle that showed the wrong reflections and that wouldn’t disappear even though it hadn’t rained for weeks. The puddle was a mysterious material from a space craft that could take any shape and form.
The puddle absorbed Heather and started to chase Bill and the Doctor through space and time, until Bill realized that an off-handed promise Heather made seconds before she was consumed by the alien (“I won’t leave without you”) had been driving the creature. Bill reached for Heather’s outstretched hand, bid her goodbye and let go. After that, Heather washed away. At end of the episode Bill joined the Doctor and stepped into the TARDIS.
Heather wasn’t human anymore and it was unclear whether she was dead or still existed as part of the mysterious material. At end of the episode the Doctor was willing to search for her with Bill.
- Season 10 - Ongoing
Female love interests:
- Heather (Stephanie Hyam, guest, 1 episode)
Romantic arc with a woman: No
No male love interests
 A romantic arc is defined as explicit, on screen, and lasts 3 episodes or more. It is listed as questionable or subtext if romance is only implied, dream sequences, or otherwise not explicit for the viewer.
 Sweeps episodes air in February, May, July and November, the periods when advertising rates are set. A character is marked as "sweeps" when there is a very limited number of episodes that address their sexuality, all air during sweeps period, and the storyline is otherwise ignore/dropped.