The Star Trek universe contains a litany of (literally) otherworldly beings, from battle-hardened Klingons to telepathic Betazoids, all through the various generations of audiences' favorite sci-fi tv show. Of all these fantastical races and cultures masterfully fleshed out by the show's creators, one of the most memorable aboard the starships has to be the Q. This being makes an appearance in the very first episode of The Next Generation, as well as Voyager, Deep Space 9, and Lower Decks, and is excitingly featured in the latest Picard season 2 trailer.