Fusa

Fusa is the main protagonist of Kingdom Hearts: Lock of Fate.

Story
Before Lock of Fate

Not much is known about Fusa before she became a Newborn Nobody except for the fact that she was born with a silver heart locket around her neck. At some point immediately after her birth, however, DiZ found her outside of the Old Mansion in Twilight Town and has her brought inside upon learning about what she is. It is also when he has developed a simulated Twilight Town to put her in to keep Organization XIII away from her and implanted both fake memories and a tracking device into her head. She eventually gains consciousness inside of her Dive to the Heart after being urged to wake up by a mysterious voice.

Lock of Fate

Fusa wakes up within the digital Twilight Town and spent a few days in it without any knowledge of what she actually is and with digital recreations of Hayner, Pence, and Olette. It is during these three days inside of the Digital Twilight Town that she develops her first new memory based on her supposed friendship with them and that her attribute of Heart is awakened. However, on the third day, she is ambushed by Dusk Nobodies, which removed the tracking device and the implanted memories out of her head, and eventually knocked unconscious by Axel of Organization XIII, who then took her out of the recreated down. It was also on this day that she summoned her Keyblade for the first time, though she did not have the proper knowledge on how to wield it.

Some time later, Fusa wakes up in the real Twilight Town and is soon told the truth about her "friendship" with the Usual Spot gang and how everything that she thought that she knew was artificial before being left in the apartment room to change into her Sacrificial Outfit. In disbelief about the truth, she escapes Axel's grip while he was away as soon as she was dressed before going out to find her "friends". When she got to the Usual Spot, however, Fusa is disheartened when she found out that the Organization member was not lying at all and decides to leave Twilight Town in dejection.

She takes a train ride away from Twilight Town and arrives at the Mysterious Tower, where the retired Keyblade Master Yen Sid and the three good fairies were waiting for her there. It is here that Fusa finds out about what her powers are, but also as to why Organization XIII is after her and how to wield the Keyblade. After three days receiving basic Keyblade training in the Mysterious Tower, she is urged to go to Traverse Town to meet with her travel companions by Yen Sid when the Heartless, led by their commander Pete, invaded the Tower. She heads out to the train leading to Traverse Town, but not before putting her new abilities to the test and fighting off Heartless for the first time.

It is in Traverse Town where Fusa meets her travel companions in the forms of the Royal Knight Max Goof, son of Captain Goofy of the Royal Guard, and Gremlin Gus, a Gummi ship pilot, technician, and journal writer, from Disney Castle. However, she also encounters Joshua from The World Ends with You, whom asks her to fix his friends' Hearts after their World has been destroyed by the Darkness, and a Meow Wow Dream Eater Spirit, which she is allowed to bring along to the journey with her and her new party.

The group leaves Traverse Town and head to Hollow Bastion for the first time where they are met by Squall Leonhart, calling himself "Leon" at the time, and brought to Merlin's Hut. They eventually meet Vincent Valentine, a member of the Castle Division to the Hollow Bastion Restoration Committee, whom is then tasked to be a guide for the small party. While fighting off Heartless in Hollow Bastion with Vincent, however, the group follows Fusa's Meow Wow to the Gorge where they discover the Asgardian God of Thunder, Thor Odinson, battling Heartless. It is within the Gorge that Fusa is gravely wounded while fighting off the Frost Behemoth Heartless (as Max and Gus were knocked unconscious in the fight) and passes out as Thor takes the small group to Asgard to treat their wounds.

Fusa would be healed of her injuries and be reunited with her friends before being brought to the Asgardian Training Room by Thor to expand on her fighting skills. She would eventually gain the Power of the Warrior and receive Thunder magic to use in combat.

{To be added}