Alice

One of the Princesses of Heart who appeared in Kingdom Hearts and Kingdom Hearts: Chain of Memories. Alice first appeared in Disney's "Alice in Wonderland" (1951), which was based on the Alice books by Lewis Carroll. 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). Nor is she considered part of Disney's Princess line, although she has made guest appearances alongside the offical princesses.

Kingdom Hearts
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. The card guard watching over Alice covered her cage 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 she had been kidnapped by the Heartless, which he called "the Shadows", and that they had fled Wonderland entirely with Alice in tow.

Following Sora's locking of the Deep Jungle world, Alice was delivered to the Disney villains residing in Hollow Bastion. She was presumably encased in glass and crystal, and forced into an enchanted sleep. 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 attempting 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.

This was her final appearance in the Kingdom Hearts series, though she, along with other Princesses of Heart, was mentioned as part of the password Tron needed.