KINGDOM HEARTS

First Appearance: KINGDOM HEARTS (2002)
Japanese Voice Actor: Risa Uchida
English Voice Actor: Hayden Panettiere

Kairi, Sora, and Riku always hung out together. When their island vanished, Kairi lost her heart. It turned out that it was hidden within Sora's.               

First Appearance: KINGDOM HEARTS (2002)
Japanese Voice Actor: Risa Uchida
English Voice Actor: Alyson Stoner

Sora’s childhood friend. Sora’s journey began as a search for Kairi, who disappeared when their island home was swallowed by darkness.

Kairi was held captive by the Heartless, but thanks to Sora, she and the islands were saved. She waits there for Sora and Riku’s return.

~♥~

Riku and Sora’s friend growing up. Kairi vanished when their home islands were devoured by darkness. Riku and Sora both journeyed to find her.         

Kairi was held captive by the Heartless, but thanks to Sora, she and the islands were saved. She waits there for Sora and Riku’s return.

KINGDOM HEARTS II

First Appearance: KINGDOM HEARTS (2002)
Japanese Voice Actor: Risa Uchida
English Voice Actor: Hayden Panettiere

A girl with a Heart of Pure Light, and Sora and Riku's childhood friend. Kairi is originally from the world of Radiant Garden, but was cast out of that world at a young age by Ansem the Wise's apprentice, Xehanort. She reached the Destiny Islands where she met and befriended Sora and Riku as well as Selphie, Tidus and Wakka. She doesn't remember her former home, but that doesn't bother her in the least as she's happy right where she is.

When the Islands disappeared, Kairi's Heart fled her Body and found refuge within Sora's. She was saved when Sora turned himself into a Heartless, thus releasing her Heart and letting it return to her own Body. As a result Naminé was born as Kairi's Nobody, using Kairi's Heart and Sora's vessel.

Kairi in return used her powers as a Princess of Heart and restored Sora to his human form by purifying his Darkness. The two parted shortly afterward as Sora left to save Riku who was trapped in the Realm of Darkness, leaving Kairi behind on the Islands for her own safety.

Sadly, Kairi forgot Sora along with everyone else who knew him when Sora went to Sleep. She was one of the first to regain her Memories of him, however, when Naminé came into contact with Roxas, Sora's Nobody who was born when Naminé was. As a result, Kairi and Sora's Hearts came into contact with each other and Kairi remembered the boy she grew up with. Happy beyond words, Kairi sent out to sea a letter in a bottle she wrote to the boy she couldn't remember.

Being left with no choice but to wait for Sora and Riku to return left Kairi frustrated. A member of Organization XIII called Axel tried to use that feeling by promising Kairi he'd take her to meet Sora, but she escaped into a Corridor of Darkness opened by Riku. Kairi managed to catch a glimpse of him before appearing in Twilight Town where she met Hayner, Pence and Olette.

Unfortunately, Axel found her in Twilight Town and kidnapped her, only to lose her to Organization XIII. She was held hostage in order to fuel Sora's anger, but was thankfully saved by Naminé. The two were soon reunited with Riku who saved them from Saix, and Kairi then learned the sad truth of her friend's fate - he had transformed into Xehanort, the same villain who once kidnapped her and the other Princesses of Heart.

Kairi managed to accept Riku despite his appearance and together they fought the Heartless that stood between them and Sora. Surprisingly, Kairi managed to use the Keyblade Riku gave her and finally received her long awaited reunion with Sora. Riku turned to leave then, but Kairi called out his name. She was the one who made Sora listen to his Heart rather than his eyes and realize who was standing right before him.

She was thankfully unharmed during the final battles and returned to the Destiny Islands while Sora and Riku fought Xemnas for the last time. It was the letter in a bottle she sent before that brought the two boys home at long last from the Realm of Darkness, and the girl was there to welcome them back with a wide, warm smile.

First Appearance: KINGDOM HEARTS (2002)
Japanese Voice Actor: Risa Uchida
English Voice Actor: Alyson Stoner

Childhood friends with Sora and Riku. She was once targeted by the forces of darkness for being a Princess of Heart.                                                 

Back at Destiny Islands, she waits for Sora and Riku’s return.                                                                                                                                  

KINGDOM HEARTS Birth by Sleep

First Appearance: KINGDOM HEARTS (2002)
Japanese Voice Actor: Sumire Morohoshi (Young Kairi), Risa Uchida (Kairi)
English Voice Actor: Ariel Winter (Young Kairi), Hayden Panettiere (Kairi)

A young girl with a heart of pure light.

Kairi was born in Radiant Garden where she lives with her grandmother. While picking flowers one day, she is attacked by a group of Unversed. She runs into Aqua and accidentally touches Aqua's Keyblade, unintentionally initiating a Keyblade Inheritance Ceremony. King Mickey suddenly appears and tells Aqua that they must protect the girl. The King and Aqua fight together to defeat the Unversed.

After the battle, the King introduces himself properly as Yen Sid's former apprentice. He and Aqua talk about how special Kairi is because of the light in her heart. He suggests that the two of them team up, but his star shard activates by itself again and he is transported unwillingly to another world. Kairi gives the flowers she picked earlier to Aqua to thank her. In exchange, Aqua places a protective charm on Kairi's necklace so that her light will lead her to the light of another should she run into trouble one day. Kairi thanks Aqua and runs to her grandmother who was looking for her. The young girl asks her grandmother to tell her favorite story about the light and darkness again.

At the end, Kairi is seen picking flowers again and looks up to the sky while her necklace gently glows.

When Sora makes the decision to depart on another journey to save those who so desperately await his help, Kairi smiles knowingly, as if expecting this turn of events, and once again, leaves her lucky charm in his care.

First Appearance: KINGDOM HEARTS (2002)
Japanese Voice Actor: Risa Uchida
English Voice Actor: Hayden Panettiere

Sora and Riku's best friend, and one of the seven maidens whose heart is made of pure light. Kairi waits on the Destiny Islands, eager for Sora and Riku to return after they've passed their Mark of Mastery Exam. 

However, once Master Yen Sid learns that Xehanort is looking to instigate a second Keyblade War, Master Yensid summons Kairi to his tower to inform her of the Seven Guardians of Light and to begin her training as a Keyblade weilder.

Kingdom Hearts 0.2 Birth by Sleep -A Fragmentary Passage-

First Appearance: KINGDOM HEARTS (2002) 
Japanese Voice Actor: Risa Uchida 
English Voice Actor: Alyson Stoner

A Princess of Heart who hails from the Radiant Gardens, Kairi is best friends with Sora and Riku. With the ability to summon a Keyblade, Yen Sid tasks Riku with bringing her to his Tower in order for him to instruct her on her training.

Kairi listens to the story of the lost Keyblade Master Aqua, a person she encountered over a decade ago, and asks Yen Sid how she can help. Yen Sid informs Kairi that she will be sent to train with Lea under the supervision of Merlin.

Despite reservations about training with Lea, a man who kidnapped her when he was a Nobody, she goes off to train in order to become a Keyblade Master.

KINGDOM HEARTS III

First Appearance: KINGDOM HEARTS (2002) 
Japanese Voice Actor: Risa Uchida 
English Voice Actor: Alyson Stoner

Sora and Riku’s childhood friend. As one of the seven princesses of heart, she became a target of the forces of darkness, but thankfully Sora and Riku came to the rescue.

She now trains with Lea as a Keyblade wielder herself to prepare for the final battle ahead.