Kairi

Kairi is caring, kindhearted and brave. She is determined and courageous when someone she cares about is in danger, as she always puts herself in harm's way to help Sora when he's in trouble despite the dangers. Kairi's heart is said to be filled only with pure light and goodness, despite darkness and evil residing in almost every heart. Kairi's good heart filled with pure light helped lead Sora back to his true form when he was consumed by the Heartless, and led Sora and Riku back to Destiny Islands when they were trapped in the Realm of Darkness after their battle with Xemnas.

Kairi is also very charismatic, quickly befriending Hayner, Pence, and Olette in Twilight Town before being kidnapped by Axel. She's usually always very cheerful and upbeat. Although she has no ability to defend herself in combat like Sora and Riku, she is very brave and strong willed and will put herself in danger anyway to help her friends. Unfortunately, this sometimes results in her needing rescuing by Sora. Near the end of Kingdom Hearts II, she finally obtains a Keyblade of her own given to her by Riku and helps Sora and Riku fight against the Organization. She is currently studying under Master Aqua to continue training with her Keyblade.

Probably the biggest part to Kairi's character is her fear of change and the anxiety with it. In contrast to Sora and Riku, who were both curious about Kairi's hometown, she'd rather live on the Destiny Islands with her friends. Kairi even prefers to stay on the islands rather than go to Hollow Bastion. And even so, up to the midway point of Kingdom Hearts II, she stays waiting for Sora and Riku to return. But she is loyal to her friends, and can be rather stubborn sometimes.

While the bond of friendship between Sora, Riku, and Kairi is strong, Kairi seems to be particularly closer to Sora than to Riku. This is noticeable when Kairi mentions a change in RIku to Sora in the beginning of Kingdom Hearts & suggests to Sora that just the two of them leave the island, which she quickly takes back as a joke. Her connection to Sora was strong enough for Kairi to recognize him in heartless form later in the game.

Kairi also has a strong connection with King Mickey's dog, Pluto. They met on Destiny Islands, and the she followed him through the dark corridors. Pluto is like her protector as well. It was loving that Pluto went to comfort her at the Organization's dungeon with her responding nicely by petting him.

Kairi can't help but feel useless, as she feels like everybody tells her that she is. She's deeply insecure about it.