A 20-year old woman who studies psychology, more specifically mental illnesses. She wanted to travel to SPHIA to study Inubuchi Keiko, but after the plane crash stranded her in the mountain cabin, she is more concernedabout keeping the other survivors alive. She frequently swaps bodies with Satoru, and as a direct consequence has to deal with his problems at SPHIA too.
Driven to Suicide: In one Bad Ending, where she feels she's responsible for Yuni and Yomogi's deaths.
A 21-year old amnesiac who might have been an employee at SPHIA. He doesn't really remember due to being shoved down the clock tower and losing all but a few key memories, and ever since he's trying to find out who is the one attempting to take his life.He swaps bodies with Kokoro at irregular intervals, and has therefore also to deal with the situation in the mountain cabin, as well as his ex-girlfriend Lin, who refuses to accept the fact that (s)he is Satoru.He is the Man Behind the Man of the entire game, and his body is actually Enomoto's. It is also assumed that his mind is, in fact, not Satoru's (I), but "Self", (I, the player), and therefore only remembers those facts that the player learned about him from Kokoro's route.
Tomato in the Mirror: It turns out that the body he's inhabiting is actually Enomoto's. The Infinity Series Timeline explains that the two of them switched bodies via quantum teleportation in July 2011, but the reason is never given.
"I like prime numbers, because they have two factors. Not one, not three... but two..."
An 11-year old boy whom Kokoro met on the plane, and one of the survivors of the crash. Curiously enough, there's two of him: one in the mountain cabin (who continuously makes cryptic remarks about their situation), and one in SPHIA (a scared boy who nevertheless becomes friends with Hotori).The one in SPHIA is the one who recently experienced the plane crash, while the one in the cabin is from 2012, a year in the future who used the exchange mechanism to ensure the continued survival of Kokoro and the others.
Infant Immortality: Yuni's obviously not an infant, but he usually survives all the bad endings that result in Kokoro or Satoru being killed. There are only three exceptions: in one bad ending, Yomogi descends into madness and after Yuni doesn't listen to one of his commands, he grabs Yuni by the throat and breaks his neck. In another bad ending, he freezes to death and Kokoro is so filled with remorse that she lays down in the snow and intentionally dies of exposure. And in another, he dies of hypothermia and she slits her throat as an act of atonement.
Obfuscating Stupidity: The Yuni at the cabin is from the future, and already knows everything that's going to happen.
Time Travel: He uses the transfers to switch his 2011 and 2012 selves.
Took a Level in Badass: His 2011 self is a scared kid who has no clue what's going on and often lashes out at Kokoro/Satoru. In between the 2011 and 2012 incident, he joins up with Satoru and Enomoto, and after learning everything there is to know about the incident, he matures greatly.
Zen Survivor: His real '12 self shows traits of this. He's annoyingly reserved with what he reveals to Satoru, but that's partly justified by the fact that Satoru being the one behind everything all along.
"Isn't a person's heart something that easily changes? No flame keeps burning forever."
A 23-year old rich woman who survived the plane crash, as well as Satoru's former girlfriend. Is a court-appointed lawyer who occasionally quotes parts of the Japanese constitution to support her self-centered opinions.
Arranged Marriage: Has been set up for one by her family, which is the reason she had to break up with Satoru. There's a blink-and-you'll-miss-it scene where she reveals that she blames herself for this; she thinks that she took the "easy way out" by not going against her parents.
Rescue Sex: When Kokoro calls her out on being ungrateful towards Yomogi, she snidely remarks that she is grateful, and that she'll show her gratitude by letting him have sex with her once if they get out of the whole ordeal in one piece.
The Scrappy: Both in-universe and out. The only one who doesn't treat her like this is Satoru.
In one of the bad endings, she reveals that she acts like this intentionally. Why? Well, generally she really is a bitch, but her behavior in the cabin specifically (arguing over/hoarding rations, refusing to work together with the other survivors, etc.) is because apparently she told herself that she was willing to do anything it takes to survive long enough to see Satoru again, including metaphorically throwing everyone else under the bus, and everyone else can think badly of her if they want as long as she survives this ordeal and reunites with Satoru. So she's a rare deliberate Scrappy.
Tsundere: Dere to Satoru, tsun to everyone else in the world.
"If there is meaning to human life, then there must be some sort of meaning to death as well. That's what I'd like to think."
A 35-year old mountaineer and one of the survivors of the plane crash. It's through his expertise that the others could survive on the mountain. He's also Utsumi's husband and the father of one of the kids that Keiko murdered.
Reasonable Authority Figure: Given the circumstances, he's remarkably understanding of Kokoro's strange behavior that she writes off as a "split personality." Also, he's very knowledgeable about what to do to survive in the cabin, is a huge moderating influence on Lin's bitchiness, and provides stability to the much younger Kokoro and Yuni. The only exception is in Bad Ending #8, where he snaps and goes crazy, deliberately letting Lin freeze to death in the basement, breaking Yuni's neck, and behaving very creepily to Kokoro.
Sadistic Choice: Discussed hypothetically. In one scene, Kokoro asks him which situation he'd prefer to be in: his current situation, where he's trapped in a freezing cabin on a mountain and is running out of food and water, but he's guaranteed to survive at least long enough for the food and water to run out completely...or a situation where he has plenty of food and water and it's warm but a crazed murderer is after him. Yomogi surprises Kokoro by answering that he'd rather have the murderer. Why? Yomogi's reasoning is that as long as he's not too hungry or thirsty or cold to think clearly, he could theoretically change the situation by dealing with the murderer somehow, but he can't significantly alter the situation he's actually in.
A 27-year old woman who works as a therapist in SPHIA. She's responsible for the well-being of the people there except when she's not. She's Yogomi's wife and the mother of one of Keiko's victims and came to SPHIA to avenge her son.
Absurdly Youthful Mother: She gave birth to Junichi when she was 14. The Drama CD makes it clear, however, that this was an accident, and Yomogi immediately took responsibility.
A 19-year old girl who has killed 12 people in a hospital in 2009. She has been disagnosed with Dissociative Identity Disorder, so she got acquitted and sent to SPHIA for treatment. Her personality has since then more or less settled on that of Hotori Suzukage, a shy, mute, and generally harmless girl who befriends Yuni.Her personality is still that of the murderous Keiko, but pretends to be Hotori when she's controlling the body. She undergoes the same body-swap that Kokoro and Satoru do, but with the dead body of the real Hotori. Since both transfers are parallel to each other, Kokoro and Satoru only meet one of them respectively..
Abusive Parents: Speculated to be the cause behind her DID, though it's never confirmed.
Ax-Crazy: One of her personalities, which is the one that caused the Awazumi Massacre.
A mysterious man hiding in the control room beneath SPHIA, and the one helping Satoru in advancing his plan. He is also the one inhabiting Satoru's real body, and vice-versa.Once Satoru finds the secret room, Enomoto explains the details of the body-swap mechanism (which actually isn't), and attempts to kill Satoru after he flips out as a consequence. He is shortly thereafter murdered by the male twin in Satoru's (actually Enomoto's) body.
Ax-Crazy: Both of the times that he tries to kill Satoru (in SPHIA and in Apoptosis), he seems to relish the idea way too much for it to be considered just part of the job for him.
Villainous Breakdown: Flies into rage when Satoru attempts to destroy the quantum teleportation equipment.
Voiced by: Akane Tomonaga
A 19-year old girl and temporary survivor of the plane crash. Shortly before her body freezes to death, she swaps bodies with Keiko, and is thereafter the "Hotori" whom Kokoro meets. She lost the ability to speak as a result of the trauma.
Death by Origin Story: Sort of. She stays alive for a while in Keiko's (and the female fetus') body, but in the end she's dead for good.
A Fate Worse Than Death: It's implied that she didn't die immediately in the snowstorm. She was still conscious during the week.
What Could Have Been: A lot of unused sprites for her are found in the game's data, also indicating that she was to appear more often.
Yomogi's and Utsumi's twin children, who were born between the two incidents. They are the respective third personalities in Kokoro's, Satoru's, Keiko's and Hotori's transfer phenomenons and responsible for most of the havoc wrought in both SPHIA and the cabin.
Ambiguous Innocence: While their actions are very questionable, they literally know nothing, and therefore aren't aware of what they're doing is wrong.
Fetus Terrible: Subverted too. As mentioned before, they aren't aware of what they're doing or that it's wrong, and are just acting like babies would if they had adult bodies.
"Freaky Friday" Flip: The male twins is the "third personality" in Kokoro and Satoru's exchanges; although only Satoru becomes aware of it very late into his route. The female twin is the same for Hotori and Keiko.
Half-Identical Twins: To the point that even though Utsumi has separate photographs of them, Satoru can't tell them apart and assumes it's just one baby at first.
Infant Immortality: Possibly subverted. The last time we see them, Inubushi is holding the girl on the edge of a cliff with a crazed look on her face. However, as we never see what happens next, we don't know whether this is played straight or subverted.
The Unintelligible: While we never hear them "speak", the accounts from the others seem to indicate that when they go through their colic, they scream out unintelligibly (justified, as they don't know how to speak).