In The Phantom Menace, after Qui-Gon encounters Darth Maul for the first time, he escapes to Padmé's ship. (Time of interest starting at 2:00)
ANAKIN : Are you alright?
QUI-GON : I think so.
OBI-WAN : What was it?
QUI-GON : I'm not sure. But it was well-trained in the Jedi arts. [R2-D2 beeps] My guess is, it was after the queen.
ANAKIN : What are we going to do about it?
QUI-GON : (exhales) We should be patient. Anakin Skywalker, meet Obi-Wan Kenobi.
ANAKIN : Hi. You're a Jedi too?
Now, arguably the first and last instances of it may not refer to Darth Maul but the situation, but there are at least two undeniable instances in a row of Darth Maul being called it.
Now, this strikes me as strange because:
- (As far as I'm aware) there hasn't been another (non-droid) sentient referred to as it.
- Darth Maul clearly has masculine features
- Other aliens, far less humanoid and far less obviously gendered (from our point of view), are he or she.
- Even droids in the Star Wars universe have gender and some are called he or she.
In addition, according to a 1999 draft at IMSDB, it wasn't always this way:
ANAKIN : Are you all right?
QUI-GON : I think so... that was a surpirse I wont soon forget.
OBI-WAN : What was it?
QUI-GON : I don't know... but he was well trained in the Jedi arts. My guess is he was after the Queen...
ANAKIN : Do you think he'll follow us?
QUI-GON : We'll be safe enough once we're in hyperspace, but I have no doubt he knows our destination.
ANAKIN : What are we going to do about it?
OBI-WAN gives ANAKIN a "who are you?" look. ANAKIN returns an innocent stare.
QUI-GON : We will be patient. Anakin Skywalker, meet Obi-Wan Kenobi.
ANAKIN : Pleased to meet you. Wow! You're a Jedi too?
So,
What are the in-universe and out-of-universe stories behind the use of the genderless pronoun for Darth Maul?
Is it how Sith were referenced (despite other evidence)? Was Darth Maul's species supposed to be known to Qui-Gon, and genderless? Did Darth Maul have a Tumblr page where he (uh, it) professed its preferred pronouns? Were decisions made at shoot-time, possibly because of the bookending uses of it for the situation in general?