Sienna

THIS CHARACTER BELONGS TO MY SISTER. ALL OF THE FOLLOWING INFORMATION COMES FROM HER.

Sienna is an extremely sassy young girl who refuses to back down unless she knows someone will get needlessly hurt. She's not always confident in her abilities, but she trusts her friends and will do whatever she feels is necessary to protect them. When not being a total sass bucket, she is warm and caring, often acting as the Mom Friend^TM. She's also a relentless tease, poking fun at everything from her friends' height to their crushes, though she has a harder time taking what she dishes out when it comes to romance.

STORY:

Sienna grew up a common girl in the Enchanted Dominion. She lived in a small village with her parents and a dog, and she learned the typical things a medieval girl would have learned.

A few months before KH1, Sienna protects Aurora from the Heartless and is granted a special sword, called Dawn Song, and the role of the Enchanted Dominion's Guardian. Unfortunately Maleficent is able to reach the world's Keyhole, and Sienna is thrown into Traverse Town alongside two young knights, William and Curtis. The three decide to make the most of their new situation and join forces with Leon and co., and in this way, they meet and interact with Sora and Natsu during their visits to Traverse Town. She also befriends Haru upon her arrival and integration into the group. Maleficent, however, realizes that Sienna is a threat due to her Guardian status. Ansem says that he will take care of her and calls upon Xemnas, who has Marluxia sneak into Traverse Town and spirit Sienna away to The World That Never Was while Sora and co. are away at Hollow Bastion. She remains in a jail cell within the castle as the worlds are restored, and thus is unable to return home.

After a while, Xemnas sees fit to have Sienna allowed to roam the castle, as she has no means of escape, and he feels that prolonged interaction between her and the other Organization XIII members might be a good way to spur them towards completing their goal (in fact, he's counting on her presence allowing them to grow hearts so they will literally feel more motivated). This leads to her increased presence in Days. She befriends Xion easily and Roxas only slightly less so, and has an initially tentative, but mostly friendly relationship with Axel. The trio eventually starts sneaking her out to have ice cream with them in Twilight Town, and Roxas eventually goes so far as to take her to other worlds during off time. Sienna, in turn, helps him understand things he's curious about and she can explain to him. Even Demyx takes a liking to her, secretly letting her into the training areas to battle against Dusks and hone her swordsmanship. Axel eventually finds out and starts chipping in, teaching Sienna to wield a blade of pure darkness called Ombra. However, it becomes increasingly clear that despite her newfound friendships, Sienna is wary at best and frightened at worst of the majority of the rest of the Organization, and Roxas decides to bring her along in his escape. The two battle and defeat Saix together, but it is Roxas alone who faces Xion while Sienna is forced to watch helplessly as her two closest friends fight. She clings just as hard as Roxas to Xion's fading memory, and the two charge into the fight with Riku and defeat him with ease. However, both end up overpowered when he unleashes his inner darkness to take on Ansem's form and powers, and the unconscious Sienna is locked into the White Room in the old mansion while Roxas is put into a data simulation of Twilight Town.

At the beginning of KH II, Sienna awakens within the old mansion, only to be told by Namine that Roxas must disappear in order for Sora to wake up from his year-long slumber. However, towards the end of the simulation, Namine lets Sienna in temporarily to let them say goodbye, and Roxas gives Sienna the charm from his zipper to remember him by, which she ties to a string and wears as a necklace. After reuniting with Sora, Donald, and Goofy, Sienna travels with them after receiving a much-needed wardrobe change from the three fairies, who are delighted to see her alive and safe. She does her best to provide them with as much information on the Organization as she can due to having spent so much time within their castle walls. She learns that all of the formerly destroyed worlds have been restored due to Sora and Mickey locking the Door to Darkness and is relieved that she will finally be able to go home after they've stopped the Organization. She also struggles with her feelings for Roxas and her friendship with Sora, as she feels it's unfair of her to want to choose one over the other. She secretly disapproves of the plan to find Riku, as she partially blames him for losing Roxas, but keeps quiet about this out of respect for Sora (and Natsu, after she joins the party). She is devastated after Axel's sacrifice, but manages to push forward and is a powerful force against the remaining Organization members. Sienna is one of the first to go through the portal to Destiny Islands. While waiting for Sora, Riku, and Kairi to return, she ropes Natsu into a conversation to distract her, and both end up revealing to each other that they knew the past Keyblade wielders. Upon the others' return, Sienna is relieved to see them all safe and to hear that the Organization is done for. She later gives Riku a stern warning to take care of Natsu before finally returning home to the Enchanted Dominion using Dawn Song's power.

In the timeframe of both coded and 3D, Sienna gets a chance to reunite with her family and finally relax for a little while. She also reunites with William and Curtis, who are ecstatic to see her again. Her reprieve doesn't last long, however, as a mysterious portal soon opens up and takes her to the Forgotten World of Prydain. There, she meets Vanitas, who has mysteriously gained physical form—and also has no clue who he is or used to be. Their personalities grate on each other, but they grudgingly team up, seeing it as a logical decision due to Vanitas having a Keyblade and Sienna being a World Guardian. The two journey through the Forgotten Worlds, clearing out as many Heartless as possible and sealing their Keyholes to protect them. They also begin collecting "E-Links," fragments of positive emotions that help Vanitas regain his lost memories. Along the way, they pick up Xion, who has also regained physical form for an unknown reason, and she and Sienna rekindle their friendship as Sienna slowly begins remembering her again. Sienna begins dual-wielding Dawn Song and Ombra as well, partially to honor Roxas, but also due to Dawn Song sometimes being an unreliable summon due to the nature of the Forgotten Worlds. Eventually, the three part ways, promising to meet up again soon.

Sienna leaves the Forgotten Worlds and arrives at the Mysterious Tower at the same moment Sora returns in -A fragmentary passage-. They, Donald, and Goofy are briefed on the situation by Yen Sid before being sent off to the Olympus Coliseum to help Sora regain his lost strength due to the events of 3D. Sienna is excited to be traveling with Sora once again, and she encourages him to trust in himself while on the gummi ship, which, alongside Donald and Goofy's words, helps him gather the strength to open a Lane to the Coliseum.

In KH III, Sienna journeys with Sora, Donald, and Goofy to gather the Guardians of Light and help Sora regain his strength for the coming battle.

EXTRA:

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