For a moment, it looks like Adira is working in the Jefferies Tubes of the Discovery in what appears to be a new kind of uniform, maybe a Starfleet uniform, maybe not. We also already knew that the Trill were returning, since we saw Burnham in the Trill caves in promotional images, and we clearly saw Trill elders (probably the Guardians of the symbionts) in the trailer, too.
Basically, not only is it exciting that Discovery is bringing on two new non-binary characters, but the fact that a Trill is joining the cast is super exciting. Though we’ve seen Trill in small roles in both Short Treks and Picard, not since Deep Space Nine has a Trill been a major character on a Trek series. This is significant because since their introduction in the TNG episode “The Host,” the Trill have always been a metaphor for the transgender experience.
“Star Trek has always made a mission of giving visibility to underrepresented communities because it believes in showing people that a future without division on the basis of race, gender, gender identity or sexual orientation is entirely within our reach,” said Discovery showrunner Michelle Paradise in a statement. “We take pride in working closely with Blu del Barrio, Ian Alexander and Nick Adams at GLAAD to create the extraordinary characters of Adira and Gray, and bring their stories to life with empathy, understanding, empowerment and joy.”