 Sora returns as the protagonist of the game . Donald Duck and Goofy also return , but are less involved in the gameplay and story . Like the first game , Chain of Memories features numerous characters from both the Final Fantasy series and the Disney animated features canon . Being a direct sequel , many of the characters from the first Kingdom Hearts reappear in this game . As each world and the related characters are recreated from Sora 's memories , they interact with Sora as if they had never met before . Chain of Memories also introduces a handful of new characters . Several are members of the enigmatic Organization . Other new characters include Naminé , a young girl capable of manipulating memories , and DiZ , a mysterious man concealed by red robes and bandages . Riku is also featured as a playable character in the second story mode . After being sealed in the realm of darkness at the end of Kingdom Hearts , Riku appears in the basement of Castle Oblivion . During his story , he is aided by King Mickey and DiZ . 
