Yui is the third of the Galactic Superheroes, Moa and Sua are the other two. She’s the middle member of the unit, where Sua is newer to the superheroes than Yui, and Moa is the oldest to the superheroes. Yui became the second galactic superhero, and even coined the term initially. At first, it was only Moa, the Director of Executions. Yui thought that was rather scary for no good reason, and decided to try and lighten up the image of the Execution Department. So the branding of “Galactic Superheroes” was established! She's known for her wacky demeanor, nonchalant attitude, and her love for aquatic life. She weaves as many aquatic-related puns as possible into her speech at all times. She has done this for an extremely long time, to the point where it is a non-conscious vocal tic. It’s as natural as breathing to her, and she won’t stop even if you ask her to. This led her to being rather unlikable to the other superheroes, but they got used to it after a while. Her peers from Homeworld never got over it though, and frequently told her to her face how much they disliked her. The two other superheroes were the only ones willing to put up with Yui's form of speech, and so she became quite good friends with them. She was considered one of the top in her class, and got moved from Taimu Soldier over to a proper elite executioner (superhero) because of her battle prowess! She didn’t measure up to the same level as Moa’s combat skill, but that’s also not a very fair comparison. Moa is the overkill option. However, Yui was very capable of taking on dangerous missions from Homeworld, usually all by herself as well!