The Gullwings are a group of treasure-hunting fairies made up of Yuna, Rikku, and Paine. They have minor roles in Kingdom Hearts II. The name refers to the sphere-hunting group that the three girls are a part of in Final Fantasy X-2.
 Design and conception
In Kingdom Hearts II, the Gullwings receive a new appearance, seeming to be small pixies. The reason for making the Gullwings "pixie-like" beings was because Tetsuya Nomura wanted to have Final Fantasy characters appear in a non-human form that still appeared human, and the Kingdom Hearts series seemed to be the ideal scenario to do so. He chose their fairy forms, as he believed that they would look interesting and because he believed that the screen would be too crowded if the camera focused on all three of them at once if they were in their normal human forms.
Interestingly, Rikku was supposed to make a solo appearance in the original Kingdom Hearts as a member of Leon's group in Traverse Town; however, because of the similarly-named character Riku, she was replaced with Yuffie, who was then given a version of the outfit planned for Rikku. Yuffie's version has the same design, but the colors are swapped.
As seen above in Jiminy's Journal, the Gullwings are called the "Friendly-neighborhood-something-or-others", a reference to a line in Final Fantasy X-2, in which they called themselves the "Friendly neighborhood Gullwings", which is a further reference to Marvel Comic's "Friendly Neighborhood Spider-Man". Jiminy's Journal never mentions the name "Gullwings", instead only copying the description the girls gave themselves in the middle of Final Fantasy X-2's story.
 Kingdom Hearts II
Sora, Donald, and Goofy first encounter the Gullwings in their third visit to Hollow Bastion, where the Gullwings inquire about the recent activities of Leon's group. Sora tells them that they are busy at the castle. Rikku nearly reveals that they are working for Maleficent, but Paine quickly stops her from doing so. She assures Sora that they come in peace (Yuna asks her if she's kidding, and Paine replies, "Okay, fine. You do the talking.") and then teleports away. Yuna and Rikku follow, but not before Yuna apologizes to Sora and company for bothering them.
They reappear during the Battle of the 1000 Heartless, shortly after Sora, Donald, and Goofy defeat a massive amount of both Heartless and Nobodies, and ask what happened to Maleficent. Sora informs them that Maleficent ran away, and they call her lame, revealing that they had indeed been working for her and noting that they picked the wrong side. Sora asks them to help out the Restoration Committee; Yuna accepts and asks if Leon has any treasure. Donald, knowing that the Committee needs all the help it can get, lies that he does (proving it by chuckling to himself after they leave). Sora asks who they are, but Yuna tells him that they are nothing worth mentioning, just "three treasure fanatics", and teleports away.
During the war, Paine lures an Armored Knight Heartless into a trap, and Yuna and Rikku double-team it and knock it off the edge with two simultaneous jump-kicks. Shortly afterward, a massive legion of Armored Knights chases them off.
The Gullwings escape, however, and discover that they had been tricked, confronting Sora and friends after the war. After a brief discussion with each other on how to work it out, they decide to take their treasure in retribution; when Sora declares that they have nothing, Rikku searches them, and Yuna declares that they are taking all of their items. However, Sora downright refuses, much to their frustration. Sora begins to apologize for the deception, but Paine stops him and reveals that Leon had informed them of their fight against Organization XIII and their search for their friends, and how rough their journey had been. They decide that it wouldn't be right to take their items after all that they had been through and assure him that they will root for them. They give Sora the Gull Wing Keyblade as a sign of forgiveness and then depart after performing their trademark pose.
True to Final Fantasy X-2, the trio sport their trademark pose, but without their weapons.
Another change to the trio is their less revealing attire as opposed to their outfits in the original game, which showed more skin. Yuna originally had hot pants and her top was more revealing and the symbol on it - a tribute to Tidus - was larger. Rikku wore a bikini top and had no stockings, and although it is changed to a tank top with visible shoulder straps in Kingdom Hearts II, her midriff and navel are still clearly exposed. Paine now wears a tank top with visible shoulder straps and her boots no longer have high-heels. Minor changes to her stockings and shawl were made as well. Also, the three fairies each have wings that are unique to them. Yuna has a hair clip resembling bird wings, Rikku's wings are the long, loose ends of her scarf, and Paine has black, bat-like wings.
In addition, Yuna is represented by the color pink while Paine is represented by the color violet in Final Fantasy X-2. But in Kingdom Hearts II, Yuna is represented by blue and Paine is represented by red. Rikku is represented by a golden yellow in both games. The color that they are associated with in Final Fantasy X-2 is seen in the first cutscene of Final Fantasy X-2, their bathing suits and, if one looks closely, their names in the main menu. In Kingdom Hearts II, their color is seen in the flashes of light that appear as they teleport in and out of scene.
As another note, none of the girls' names are mentioned, besides Yuna's nickname, as Rikku whispered it to her when they confronted Sora and co. about tricking them, are said in the English dialogue outside of non-subtitled whispering between the trio, possibly to prevent confusing Rikku with Riku. Paine also mentions Rikku's name in a text box if the player talks to her before talking to Yuna after the battle.
While the Gullwings' physical appearances have changed, their personalities have not: Yuna is unfailingly kind-hearted and polite, even bowing in respect to Sora, Donald, and Goofy and apologizing to them for bothering them; Rikku is good-natured and ditzy, the latter of which shows when she nearly reveals to Sora and friends who they were working for; and Paine is emotionally distant and anti-social. However, it would seem that they are more like mercenaries in this game, working for Maleficent in exchange for treasure, and agreeing to work for Leon only if he pays them to do so; when confronting Sora, Donald, and Goofy, Rikku complains about Leon not having any treasure and Paine says, "And we fought for you guys", almost as if it was a crime to help someone out without receiving payment. Nonetheless, they do seem to have a strong moral compass, as they decide to let Sora and co. off without consequence upon hearing of his fight with Organization XIII and search for his missing friends, as they believe that punishing them for doing the right thing is just not right.
The Gullwings are portrayed as much weaker than their Final Fantasy incarnations, or even other warriors like Yuffie and Leon. It takes a combined effort from all three to defeat one Armored Knight, one of the weaker types of Heartless. They mostly rely on hand-to-hand combat, although they are also able to hover, warp, and conjure belongings like their Gull Wing Keychain.
The Gullwings are a band of sphere hunters. The group formed in the first direct sequel to a Final Fantasy game, Final Fantasy X-2.
Yuna was the main female protagonist of Final Fantasy X and one of the main protagonists of Final Fantasy X-2. In Final Fantasy X, she embarked on a sacred journey known as the 'Pilgrimage' to travel the world, praying to monoliths known as the Fayth, to receive the ability to summon and command creatures known as Aeons. During the course of the game, she found a very close friend in Tidus, the narrator and an apparent newcomer to Spira.
Rikku was an Al Bhed, a once-exiled race that utilized machina, technology once forbidden by the laws of Yevon. Despite the intense racism aimed at the Al Bhed, she managed to keep a stiff upper-lip with her energetic and upbeat personality. She is also Yuna's maternal cross cousin.
At the outset of Final Fantasy X-2, Paine was shrouded in mystery and new to the Gullwings. Progressing through the game revealed more and more of her past.
The Gullwings were banded for the sole purpose of hunting spheres, invaluable items scattered across Spira containing information about its past. But more importantly, their goal throughout the game was to locate information regarding a man who looked exactly like Tidus, who appeared in the first sphere they uncovered and who eventually turned out to be Shuyin, the game's main villain.
 Notes and references