Alice

Alice is one of the Princesses of Heart who appeared in Kingdom Hearts and Kingdom Hearts: Chain of Memories. Her character is based on her appearance in Disney's "Alice in Wonderland" (1951), which was based on Alice's Adventures in Wonderland as well as Through the Looking Glass and What Alice Found There by Lewis Carroll. The world in which she appears is Wonderland, although whether or not this is her home world is debatable. In Kingdom Hearts she was voiced by her original voice actress, Kathryn Beaumont. She is the only member of the Princesses of Heart who is not, by technical terms, a princess (aside from Kairi). In addition, she is not considered part of Disney's Princess line, although she has made guest appearances alongside the official princesses in that franchise.

Kingdom Hearts
Alice's image was first seen in the Awakening world of Kingdom Hearts, with her silhouette depicted in stained glass on the third pillar, which is prominently pink in color. Alice was the only princess displayed in silhouette form, possibly referencing that she was still awake and out of harm's way at that point.

After falling down a rabbit hole, Alice followed the White Rabbit to the Queen of Hearts' court were she was put on trial for supposedly assaulting the Queen with the intention of stealing her heart. Attempting to back Alice's innocence, Sora inadvertently caused the Queen to place Alice in captivity. While talking with her, Sora discovered that Alice might have accidentally stumbled upon an undiscovered system of world travel due to her arrival in Wonderland from another world. When Alice tried to discuss the matter further with Sora, she was silenced by the card guard standing watch over her.

Later on, when Sora brought forth evidence of Alice's innocence, the Queen's anger at his attempts lead to a scuffle. As the Queen ordered her subjects to attack Sora, Donald and Goofy, the card guard watching over Alice covered the cage containg her and rose it above the court so as to keep her out of Sora's reach. When Sora finally managed to get the cage holding Alice back down, she had disappeared. The Cheshire Cat later revealed that Alice had been kidnapped by the Heartless, which he referred to as "the Shadows", and that they had fled Wonderland entirely with Alice in tow.

Alice was later delivered by the Heartless to the Disney villains residing in Hollow Bastion. She was presumably encased in glass and crystal, and forced into an enchanted sleep, just as the other princesses before her (Alice was the fifth princess to be captured). Her heart was then used by Maleficent to open the Final Keyhole, but a selfless act by Sora returned her heart to her. Upon waking, she assisted the other Princesses in defending Hollow Bastion from the darkness that was threatening to consume it. When Kingdom Hearts was sealed she was returned to her own world.

Kingdom Hearts: Chain of Memories
She appeared as a fragment of Sora's memories. Her role was similiar to her first appearance, but this time she was blamed for stealing the queen's memories. With help from the Cheshire Cat and Sora she saves herself from being excecuted.

This was her final appearance in the Kingdom Hearts series to date, although she was referenced in Kingdom Hearts II (see below).

Kingdom Hearts II
Alice's name was part of the password that allowed access to the DTD dataspace in Tron's world.

Kingdom Hearts: Chain of Memories
"A curious girl who fell down the rabbit hole into Wonderland. Alice was falsely accused of stealing the Queen of Hearts's memory and put on trial, but we intervened and helped her clear her name."

Trivia
Alice is the only member of the Princesses of Heart, aside from Kairi, who is not an actual princess by birth or marriage. She is only considered a princess in the game due to the lack of darkness in her heart.

Alice's voice actress, Kathryn Beaumont, also voices Wendy in the Neverland world. Kathryn Beaumont voiced both Alice and Wendy in the original Disney films that they appeared in ("Alice in Wonderland" and "Peter Pan" respectively).

In the end credits, Alice has not returned to Wonderland (although Jasmine has returned to her home world, Agrabah). Instead, she is seen bowing with the other Princesses of Heart, Belle, Aurora, Snow White and Cinderella), whose worlds were destroyed. This suggests that Wonderland is, most possibly, not Alice's home world.