For an artificial intelligence that runs a ship, HUE certainly comes across as a little depressed at times. This seemed to be the case in Season 2 of Final Space, when he kept trying to make the best of being stuck in a rundown body instead of being part of a powerful ship. But at least he finally got to see Paris in Season 3, fulfilling a promise he had made to himself all the way back in Season 1, Episode 2.
HUE is technically an acronym for Heuristic Unified Entity, which was what he was when fans met him in Season 1, Episode 1. He was the artificial intelligence running the Galaxy One, as well as the overseer of Gary Goodspeed's five-year deep space prison sentence. Unfortunately for Gary, his Deep Space Insanity Avoidance Companion, an irritating and incompetent robot called KVN, was also there, tormenting him endlessly.
For all intents and purposes, HUE was Gary's warden. In addition to running the ship, HUE was responsible for making sure that Gary served his prison sentence correctly, and punished him by adding time to that sentence when he didn't. Even after Mooncake showed up and changed their lives incredibly, Gary still had to finish his prison term. Even time travel wasn't enough to bypass it.
In Season 1, Episode 2, Gary talked to HUE about what he would do if he had a proper corporeal form. HUE said that he would want to experience Paris. The disembodied artificial intelligence had spent his entire existence in a ship, making it very difficult to enjoy cheese, baguettes, and the whimsy of the world's most romantic city. But Season 2 would change the game for him.
After the destruction of the Galaxy One at the end of Season 1, HUE was forced into a terrible and useless robot body for Season 2. He became increasingly depressed as he tried to make the best of a bad situation. Then, in Season 3, Episode 2, HUE's fondest desire came true. He and the rest of the team finally ended up back on Earth, making their debut in Paris, France. It wasn't all wine and roses, though.
By this point, Earth had been dragged into Final Space and everyone on the planet except for one person was dead. Unfortunately for Gary, that lone survivor was the man who created KVN and he was surrounded by hundreds more of the bane of Goodspeed's existence. Regardless, the fact that the city was in ruins and there were quite literally dead bodies everywhere didn't stop HUE from trying to enjoy his dream vacation in Paris.
That being said, his robot body was falling apart around him, which made enjoyment a little complicated. So did the eventual annihilation of Earth. While Paris wasn't everything HUE wanted it to be, the trip wasn't a complete waste. The crew managed to get their hands on a new ship called the Galaxy Two and HUE was able to install himself as the new artificial intelligence. HUE was back where he belonged and that definitely made up for his morbid Paris vacation.