Sora, Donald and Goofy:
While venturing to many worlds, they visit a mysterious place called Mythos. Upon arriving, they are caught in a thunderstorm and are forced to take shelter within an asylum. While there, they find out that the Heartless found their way there and then discover the disappearances of most of the patients and staff, along with mysterious demon-like mutants terrorizing the building. After saving Anna Yevon, a local detective, and her rookie of a partner from the Heartless, they learn that the asylum is rumored to be under suspicion of dark rituals taking place within it. The three team up with Anna to crack the case.
Anna Yevon:
A local detective that goes to Woodrow Asylum to investigate after the rumors of dark rituals taking place inside of the asylum. She is accompanied by a rookie policeman, Michael Kingsley, who runs away after encountering the Heartless, leaving Yevon to fend for herself. She is saved by Sora, Donald and Goofy and she tells them about her investigation in which they decide to help her with.
Michael Kingsley:
A rookie police officer who partners up with Anna to investigate the Asylum. When the two first encounter Heartless, Michael flees from the fight and leaves Anna. Later, when Anna, Sora, Donald and Goofy finds him hiding in one of the rooms, he learns that the three will help with the investigation.
Mina Emmerich:
A 14-year old girl who is a patient at Woodrow Asylum. She was admitted into the asylum for showing signs of being a Schizophreniac. After being saved from a mutant, she frenquently begins to help Sora and company with their investigation.
Mr. Kelgar:
The director of Woodrow Asylum. After his asylum is suspected harboring dark rituals, Anna and her partner Michael come to investigate. He later encounters Anna, along with Sora, Donald and Goofy and kindly urges them to cease investigation and asks them to leave once the storm passes. But, since the Heartless run rampant in the asylum, he tasks them to get rid of them for the safety of himself and the patients. Whenever Sora or anyone questions the disappearances of his staff and patients and the mysterious mutants appearing occasionally, he avoids the question and eagerly asks them to take care of the Heartless. The reason of his demon-like appearance is also avoided.
Mr. Carrey:
Mr. Kelgar's assistant. Unlike Kelgar, who is kind despite his appearance, Mr. Carrey is mean and nasty. According to Mina, he treats the patients like animals and occasionally physically abuses them. Once he laid eyes on Sora and company, he hasn't liked them one bit. He tries to diagnose a mental illness to fit the each of them so that he can admit them into the asylum himself, much to their dismay. He is always seen around the area when Sora, Donald, Goofy and Anna take out a Mutant boss or a Heartless boss.
Clara Quinn:
The Phychiatrist at Woodrow. She is a kind and patient woman, who is respected by most of the patients. When the storm hit right before her shift ended, she had no other choice but to stay in the asylum until the storm passes. She is saved by Sora and company after being chased by a mutant. Ever since, she frenquently helps by gathering info from the remaining patients.
Mutants:
Monsters that appear within the Asylum. After the disappearance of half of the staff and patients, Mutants have began to be frequent in the building, threatening harm against the others.