Ariel

Ariel is a character from the Kingdom Hearts games, living as princess in the sea world Atlantica. She is originally from the Disney movie The Little Mermaid. As a person, Ariel is very curious about the dry land and often dreams to visit other worlds, which her father forbids her to even think about it.

Kingdom Hearts
As the youngest mermaid daughter of the sea lord King Triton, Ariel has the love and respect of the entire sea world of Atlantica.''

However, she longs for a world outside of her own, and an experience beyond what she has had in the undersea realm.''

Kingdom Hearts II
''The seventh daughter of Triton, king of Antlantica. Ariel has the most beautiful singing voice of all the merpeople.''

''Ariel wants to see the world outside her ocean home. She even keeps a collection of things from the human world in a secret grotto.Sora and his friends helped her the last time Ursula tried to take over Antlantica.''

Kingdom Hearts
Ariel makes her debut in Kingdom Hearts. She meets Sora, Donald and Goofy when she is running away from the Heartless with Sebastian and Flounder. When she hears Goofy talking to her father about a Keyhole, she decides to help them find it and manages to find the crystal, that resembles her father's trident, that has the power to reveal the Keyhole. King Triton arrives in time to destroy it.

The sea witch Ursula lures her into helping her steal the trident from her father, which she does and almost makes a huge mistake. With Sora's help, they defeat Ursula.

Abilities
In this game, Ariel is able to use all kinds of magic that Sora has learned over the course of his journey (excludes summoning magic).

Kingdom Hearts: Chain of Memories
In Kingdom Hearts: Chain of Memories, she serves as a memory of Sora. She roams around Atlantica though when she sees Sora and friends she runs away for no reason. Sora and co. find out she was running away because she stole her father's Trident to save Flounder from Ursula's clutches. She joins Sora's party as a Friend Card when she gives Ursula the Trident.

Kingdom Hearts II
In Kingdom Hearts II, she has an unusual role, as Atlantica sets a musical stage about Ariel and Prince Eric. Like the original movie, she saves the prince from drowning and takes him to shore, there she sings to him until he awakes.

Unable to forget about the prince, she falls into deep depression, and so Sora and the others decide to help her. When her father finds out that she has fallen in love with a human, he tries to make her forget about him by destroying the statue made with his face. But then Ursula reappears and makes a deal with her; to make her human for three days in exchange for her voice. In addition she must make the prince kiss her willingly before sunset on the third day, otherwise she will become hers forever. Despite the hardship, she signs the contract and finally gets to meet Eric in person, although he does not recognize her.

On the third day, Ariel gets her voice back with Sora's help, and they all battle the sea witch while performing a musical: Ursula's Revenge. Once Ursula is defeated, Ariel reveals to Eric that she is a mermaid and says goodbye to him, but he does not change his feelings about her. Seeing how much they are in love, King Triton finally gives in and lets his daughter be with a human prince.

In the ending credits, Ariel is seen in human form and marries Eric.

Trivia
Before all the seven Princesses of Heart were revealed, Ariel was easily mistaken as one of them because of her Disney princesses status.