If we really want a genderless assistant voice bring back the novelty voices from Mac OS X like Zarvox, Pipe Organ, and Cellos.
It sounds a little bit like the voice of a moppet-type character from League of Legends that just huffed helium. Because it is so stylized you don't have the problem of a "perfect english gentleman" who pauses unnaturally, sometimes makes vowels like T-Pain, etc. that you have with more realistic voices.
It definitely comes across as female to me, but it is cartoony enough that it not so culturally coded as female -- so there is less of a sense of "female servicing" as there is with most voice assistants.
* Soundwave G1 voice compilation part I - YouTube || https://www.youtube.com/watch?v=qOu3hYXE_tM
As it stands Q isn't genderless it's just gender non-conforming, which is a great alternative but I'd like to see some work into an actual "AI" voice rather than these voice assistants that try to imitate a human on the gender spectrum.
That's because it's the voice used to announce the titles of the episodes.
Please recognise that agender people are both human and genderless.