When Boimler is shipped off to Division 14 in Episode 7 of Decrease Decks, he’s confronted by a big three-armed, three-legged alien who seems considerably ominous and menacing. However, in TAS, the final time we noticed an alien who like this, it was Arex, and he was super-friendly. In reality, within the episode “Mudd’s Ardour,” we even noticed Arex play a lute.
In TAS, Arex was voiced by James Doohan, who you higher know because the man who performed Scotty. Doohan (and Nichelle Nichols) did rather a lot of further voices for TAS, a lot so, that in some episodes they’re voicing two characters who’re speaking to one another. By way of the bridge hierarchy, Arex “changed” Chekov, who was by no means seen in TAS in any respect. Though Walter Koenig wrote one episode of the present, his general involvement within the sequence was restricted.
The essential canonicity of Arex was considerably murky for a very long time, principally as a result of every part about TAS was thought of pseudo-canon for years. Though these days, the Trek franchise totally acknowledges TAS as canon, with Discovery helping to lead the charge on that entrance by having two text-on-screen mentions of Robert April has been the Captain of the Enterprise NCC-1701 earlier than Pike. (This truth was established within the TAS episode “The Counter-Clock Incident.”)
And, considerably notably, the seventh episode of Star Trek: Picard discovered Riker mentioning the Kzinti, a cat-like species from an Animated Collection episode referred to as “The Slaver Weapon,” however who additionally originated in Larry Niven’s “Known Space” books and quick tales.
However, what sort of alien is Arex, and this new, very imposing medical officer? Properly, the reality is, there are sort of two solutions, and maybe, three. Within the Alan Dean Foster Star Trek Logs books (which have been novelizations of TAS episodes) Arex known as an Edoan. Later, within the New Frontier universe (created by Peter David) a distinction was made between a species referred to as Edosians and Triexians. The concept is that these species have been carefully associated, however not precisely the identical. Which, is sort of just like the distinction between Vulcans and Romulans.