Although named Bill she is in fact played by a female,
possibly. The name "Bill" is an homage to William Hartnell, who would doubtlessly find it an honour to have his name appropriated by a black lesbian. Her wet waifu Heather is even named after Hartnell's wife! It's like pottery.
She is the Doctor's first openly gay companion... Y'know, aside from that one, and possibly that one too. Oh yeah, and don't forget that other one - not that any of these people are canon. Some people like to count this guy, that guy, and Ace too even if they aren't quite fully homo, but
whatever REEEEEEEEE BI ERASURE!
She is definitely from the
1980s Mondas the current year.
Last but not least, she serves chips.
She seems pretty good to me, although there were some minor autism tornadoes about her entire first episode being dripping wet (lol) with the
gay lesbian agenda.
Anyway she's definitely better than she appeared in promo pics and trailers (as is usually the case) and at least appears to have a character beyond the serving of her beloved chips.
I could do without the WOW! on her jacket though.