
Riku is one of the main characters in the Kingdom Hearts series. He is a major playable character in Kingdom Hearts Chain of Memories and Kingdom Hearts 3D: Dream Drop Distance. He has lesser playable roles in Kingdom Hearts II and Kingdom Hearts III, only for minor battles. In Kingdom Hearts 358/2 Days, he is playable in Mission Mode.
He lives on Destiny Islands with his best friends, Sora and Kairi, and all three of them dream of venturing from Destiny Islands to find out what worlds are out there. This dream comes true, although Riku becomes influenced by the darkness and struggles to find a place as Sora’s ally. He eventually does and also becomes a Keyblade Master after passing his Mark of Mastery exam.