Editing Squall Leonhart

Squall Leonhart grew up in [[Radiant Garden]] until it was consumed by darkness, being able to escape to [[Traverse Town]] thanks to [[Cid]], along with [[Yuffie]] and [[Aerith]]. Ashamed and angry that he was unable to defend his home and his loved ones from the Heartless, Squall assumed the name of "Leon" in order to distance himself from his past, vowing never to use his real name until the Heartless are defeated and his world restored.

Nine years after the fall of Radiant Garden, now named Hollow Bastion, when the wielder of the [[Keyblade]] was revealed, King Mickey ordered [[Goofy]] and [[Donald Duck]] to find Leon, trusting that Leon would inform them of the circumstance and help them find the wielder, [[Sora]]. It turned out, however, that Leon had already found Sora within the safe First District of Traverse Town, challenging and defeating Sora before dragging him to a room in one of Traverse Town's motels. There, Leon and Yuffie explained to Sora about the Heartless and his destiny as the Keyblade's chosen one. Uniting Sora with the newly arrived Donald and Goofy, Leon then sent them on their way.

Leon also gives Sora the [[Earthshine Gem]], which contained the spirit of [[Simba]], for luck. Later, after they move to the newly accommodated base, a previously abandoned house deep in Heartless territory, Leon and company tells Sora about Maleficent and about {{Ansem}} and his journal before once again, seeing Sora, Donald, and Goofy off.

After escaping from Hollow Bastion, Sora, Donald, Goofy, and [[Kairi]] sought shelter with Leon's group in Traverse Town. Sora informs Leon of everything that had happened, prompting him to follow Sora and company when they left for the final battle with Maleficent in Hollow Bastion.

After the defeat of Ansem, while skirmishing through [[Castle Oblivion]], Sora, Donald, and Goofy later meet Leon and his friends in a memory-based version of Traverse Town. However, like the town itself, little did Sora and his party realize that Leon and his friends were actually the product of Sora's memories that were being manipulated by Naminé. Due to that, the Leon and his friends that Sora encounter have no memories of ever meeting Sora, but somehow know his name, which they could not explain how. Like the Leon from the first game, he nonetheless decides to help Sora and company, such as by teaching Sora the card-based system as well as providing the Simba and the Key of Guidance cards in order for Sora to proceed. Before Sora leaves, Leon ensures him that he will be okay; no matter what shape reality takes, and that while he may not remember Sora, he knows that he is in his heart.

After the lost parts of Radiant Garden were liberated from the End of the World, Leon and his friends formed the Hollow Bastion Restoration Committee to restore their world to its former glory. During the course of their work, they rebuilt much of the town and began reconstruction of [[Hollow Bastion|Ansem the Wise's castle]], removing much of the modified machinery that was added to it.{{fact}} Also, due to [[Naminé]] tampering with Sora's memory, Leon lost his memories of his former friend.

After Sora and Riku return to Destiny Islands, he is seen in Merlin's house reading a letter that produces a pair of glowing wings, which then float towards the ceiling and vanish.

After [[Data-Sora]] collects every [[Ending Card]] in Castle Oblivion, Data-Roxas allows him to open the final door and learn the truth behind the hurt. Right as Data-Sora moves to open the door, illusions of Leon and Yuffie appear to congratulate him for keeping Traverse Town safe, explaining that something urgent came up that they had to deal with. They express a wish to someday work alongside him, and give him a [[Debug Device: Y]] and a [[Heat Sink Belt]] before departing.

One year after Master Xehanort's defeat, Leon and other Restoration Committee members are seen inside Merlin's house trying to help Riku uncover any clues regarding the whereabouts of the missing Sora.