Kaede AkamatsuThe Ultimate Pianist and Decoy Protagonist of New Dangan Ronpa V3, Kaede keeps her life at the expense of Shuichi's death. Heartbroken by his sacrifice, she vows to end the Killing Game while struggling with guilt and paranoia.
- The Atoner: Kaede is plagued by remorse for what happened in the first trial. This gets in the way of the second trial as Kaede can't bring herself to vote for the culprit.
- Cassandra Truth: Because of Shuichi's lie, only half of the class believe that Kaede is the culprit despite her claims, leading them to vote for him over her by a margin of one vote.
- Chekhov's Skill: Kaede's excellent hearing allows her to pick up on contradictions made by others during trials.
- Consummate Liar: Being a heroic example of the trope, Kaede convincingly lies her way through difficult parts of the class trial to keep anyone from making the wrong conclusions, even relying on Tenko and sometimes Kokichi to back her up.
- The Determinator: Kaede lives up to this trope by soldiering on as the de facto leader of the group after Shuichi's death. Even after being shot in the arm and receiving scorn from half of the remaining students, she refuses to give up out of sheer stubbornness.
- Exact Eavesdropping: Kaede finds herself doing this at times while exploring the school facilities. It helps that she has excellent hearing due to her talent as the Ultimate Pianist.
- Heroic Self-Deprecation: Kaede is prone to doing this at her lowest.
- Hypocrisy Nod: While she and her antagonist Maki share this trait, at least Kaede is mature enough to acknowledge it.
- Necessary Drawback: Kaede doesn't suffer as much from confidence issues like Shuichi and gains early access to crucial information regarding the mastermind. The drawback is that she has to contend with constant detractors like Maki and Kokichi while growing more paranoid as the group's numbers decrease.
- Passive-Aggressive Kombat: In her more light-hearted moments, this is how Kaede interacts with Maki or Kokichi following her respective confrontations with them.
- Revenge Before Reason: She wishes to hold a class trial against Maki when she admits to killing Kokichi in Case 5. Even though everyone is aware that this will only result in them going along with Monukuma's plan, Kaede admits that she doesn't care and simply wishes to see her hated adversary executed to avenge Kokichi.
- Secret Keeper: Kaede is this with Miu after the two discover the Mastermind's secret room along with Motherkuma during the second chapter. Afterwards, Miu reveals to Kaede the weapons she made for Kokichi and asks for her opinion on whether she should give them to him or not.
- Took a Level in Cynic: Kaede gradually becomes less idealistic and more discerning of others as the story progresses. By the end of the third trial, she's more willing to lie and keep secrets if it means keeping the group whole while finding the mastermind.
- On the plus side, being cynical means that she's unlikely to fall for any of the motives thrown the group's way, including the one revealing the supposed end of the world.
Miu IrumaThe Ultimate Inventor, she becomes one of Kaede's trusted allies early on, though the fear of being killed by the mastermind compels her to commit murder to escape. She becomes Keebo's unwitting murderer and dies calling for his help.
- Because You Were Nice to Me: She develops romantic feelings for Keebo because of how he openly shows respect for her abilities while having saint like patience regarding her abrasive behavior.
- Better to Die than Be Killed: After the end of the Chapter 4 trial, Miu desperately begs Kaede or anyone to Mercy Kill her rather than let her go through one of Monokuma's executions.
- Defiant to the End: Rather than be executed, Miu decides to die fighting by hijacking an Exisal to attack Monokuma. This only results in Kaede and Ryoma getting injured from the attack.
- Dude, Where's My Respect?: She vents to Kaede how she finds it unfair that the other students constantly request her to make inventions for them yet they continue to insult and demean her without a care. Though Kaede considers this somewhat justified because of her own insulting behavior towards the group.
- I Just Want to Be Loved: Despite her abrasive attitude, she earnest claims that she would like to be liked by the others or at the very least appreciated for her work.
- Not Helping Your Case: Miu doesn't make it any better for herself when the others interrogate her role in Keebo's murder during their trip in the virtual world.
- Off With Her Head: How Miu dies in her execution.
- Properly Paranoid: This trait is treated with more care here than in canon. She is visibly disturbed by the idea that the mastermind can kill her after Kaede deduces that Himiko was murdered by them in the mastermind's lair. This places the inventor on edge since she and Kaede were the only other people to go inside the lair mixed with how the mastermind is always watching them.
- Secret Keeper: On the receiving end of this as she tells Kaede to keep the location of the mastermind's lair to themselves.
- Yank the Dog's Chain: Miu's attempts to resist punishment after her trial go nowhere as she literally gets yanked off to her execution just before anymore damage can be done to the Exisals.
Tsumugi ShiroganeThe Ultimate Cosplayer and the mastermind of the Killing Game, Tsumugi is content to observe the drama around her while making stealth moves to ensure that the game is running smoothly.
- Adaptational Villainy: While plenty bad enough in canon, she has personally killed two people so far as opposed to the one person to cover for Kaede's failed trap. On top of that, she was actively taking advantage of the "first come first served" rule that was mostly just a quick cover up in canon to get away with killing Himiko by forcing the others to concentrate their efforts on Gonta's murder without any real opportunity to go over Himiko's.
- A Day In The Lime Light: Chapters 31 and 32 start out from her POV along with providing vague details about her real interest in the killing game. This also extends to the investigation held in chapter 32 after Kaede decides to skip this part with Tsumugi investigating the hangar and finding clues that will be crucial for Kokichi's trial.
- Bitch in Sheep's Clothing: Acts cordial and polite in front of the cast, but can be rather vicious as exemplified by her murdering Himiko in cold blood.
- Can't Kill You, Still Need You: It's hinted that Tsumugi is keeping Kaede alive to make the Killing Game more exciting. Plus, the fact that Kaede is unable to link the mastermind's lair to anyone makes her a low priority for disposal compared to Himiko and Kokichi.
- Karma Houdini: Gets away with not one, but two murders thanks to Monokuma.
- Manipulative Bitch: While maintaining her image as a friendly but ordinary girl, she's able to push people's buttons by bringing up unnerving facts about the other students in the hopes of pushing them to either kill or turn on each other. All part of the job of keeping the show going.
- Villain Protagonist: During the 5th trial, Tsumugi becomes the POV protagonist as she guides the discussion in order to milk as much drama from her classmates as possible.
Tenko ChabashiraThe Ultimate Aikido Master. Following Shuichi's death, she grows closer to Kaede and softens her less-than-favorable stance on men.
- Berserk Button: While Tenko's hatred for males isn't as prevalent here, it's now overshadowed by her new pet peeve of people keeping secrets from one another. She doesn't make an issue out of it with Kaede due to the latter's emotional confession, but feels outright betrayed when Ryoma reveals his own secrets during the fourth trial.
- The Confidant: She becomes Kaede's closest ally throughout the story and does her best to support her even if she doesn't agree with most of her choices.
- Does Not Like Men: It gets toned down as the story progresses.
- Heroic B.S.O.D.: She suffers from one right after Himiko's murder. It doesn't help that Monokuma abruptly ends the trial after the blackened is found, preventing everyone from figuring out her killer's identity.
- The Medic: Fills out this role when her friends start to gain serious injuries. She tends to Kaito's foot injury which seems to be getting worse as the story progresses and she single-handedly oversaw Kaede and Ryoma's injuries after Miu's last stand/execution.
- Secret Keeper: Tenko becomes this for Kaede after the latter shares the truth regarding Rantaro's murder.
- Took a Level in Kindness: Tenko's man-hating qualities are toned down here while emphasizing more on her kinder traits.
- Trauma Button: After Himiko's death, Tenko immediately loses her composure if she remembers too much about the mage's death. She also has a hard time going into the cafeteria since that was where they found her corpse.
Kirumi TojoThe Ultimate Maid. She became the second victim by participating in a Duel to the Death with Korekiyo Shinguji and losing.
- Easily Forgiven: Keebo holds no hard feelings for her even after she sabotaged his circuitry in order to create a diversion for her murder scheme.
- Pet the Dog: She didn't blame Kaede for what went on in the first trial and even tried to make her feel better about herself.
- Think Nothing of It: Kaede and Kaito both commend Kirumi for being able to take on so many requests from the group while continuing her duties of cooking and washing. She brings up this trope as taking on endless tasks is part of her duty as the Ultimate Maid.
Maki HarukawaThe Ultimate Assassin. She becomes a somewhat antagonistic figure throughout the story, often berating Kaede's optimism or looking down on her in general. Likewise, the feeling becomes mutual once her true identity is revealed in the second chapter.
- Adaptational Jerkass: While Maki wasn't all that friendly to begin with in the source material, she's far more hostile and condescending here.
- Anger Born of Worry: This is Maki's response when Kaito strains himself too much in the later chapters. It culminates in her being protective of him when he gets incriminated as a potential suspect for Keebo's murder.
- Commander Contrarian: Maki assumes this role by rebuffing Kaede's efforts to have her cooperate with the group during their investigations and debates. Their tense relationship worsens when the latter outs her as the Ultimate Assassin. While the animosity between them slightly abates in later chapters, they still remain on bad terms and do not hold back verbally.
- Crush Blush: Gets one when Kaede calls her out for being a Clingy Jealous Girl.
- Hypocrite: Is adamant about not letting people inside her lab, but gets indignant when she and Kokichi are kicked out of Kaito's lab when he reaches his breaking point.
- I Did What I Had to Do: In Chapter 5, she justifies herself in killing Kokichi even though her main target was Kaede. She believed that Kaede was the true mastermind and is willing to do whatever it took to end the killing game, even if it meant killing anyone [Kokichi] who stands in her way.
- Jerkass Has a Point: As harsh as Maki is to Kaede, she makes a good point when the latter's refusal to condemn the blackened only makes things worse for the whole group. She also brings up how refusing to accept that one of their fellow classmates may be the mastermind will result in more casualties.
- Jerk with a Heart of Gold: Despite her cold attitude and her constant antagonism, Kaito claims Maki is this because of how she wants to end the killing game as soon as possible along with wanting to get Kaito medical help for his illness.
- The Rival: She serves as Kaede's worst antagonist after the mastermind.
- Xanatos Sucker: In the penultimate case, Maki believes that Kaede and Kokichi are Remnants of Despair thanks to the Flashback Light. This leads her to attack them in order to end the time limit.
Himiko YumenoThe Ultimate Magician. She is killed in the third chapter for snooping around in the mastermind's lair. The class figures out that the mastermind killed her but cannot figure out who the mastermind is. Since she is the second victim, her case doesn't count, and the mastermind gets away with it.
- The Load: Himiko was actually afraid of becoming this as she wasn't as involved in solving the trials or knowledgeable about the activities of the other students. It's because of this that she decides to help Kokichi with his blackout scheme to make Gonta's murder solvable and strike back at the mastermind.
- The Lost Lenore: Becomes one for Tenko in the third trial.
- She Knows Too Much: The reason why Himiko gets killed by the mastermind.
- Took a Level in Badass: Before her death, Himiko secretly gives Tenko the key to Angie's lab and helps Kokichi catch the mastermind off-guard using one of Miu's bombs to turn off the school's power supply. Her murder not only brings Kaede and Tenko closer, it also confirms Kaede's suspicions of the mastermind being among the class.
Angie YonagaThe Ultimate Artist. She intended to kill Ryoma, but Gonta showed up in his stead. She killed Gonta and hid the body, hoping that a class trial would never take place. Kokichi and Himiko moved the body, preventing Angie from getting away with murder.
- Adaptational Villainy: Angie was a Tautological Templar in V3, but she did legitimately want to stop the killing game. Here, she commits a murder of her own, though she did it to try to end internal friction in the group, rather than to get out. She later admits she wanted to hide the body to avoid a class trial ever taking place, but still puts up an effort to win her escape at the cost of the other's lives when the trial comes anyways.
- Face Death with Dignity: Angie keeps her hands in prayer throughout her entire execution, despite the pain of the burning wax.
- Frame-Up: An unusual example. She still had the intention to kill Ryoma and organized how his murder would play out. But the mastermind intervened by giving Gonta a note that directed him to Angie's room resulting in the artist killing him to keep her murder a secret. Everyone assumed that Angie had written the note in order to get Gonta to go to her room so she can kill him.
- Innocently Insensitive: Angie attempts to make converts out of the group right in the middle of investigating Kirumi's death only to be rightly called out on it by Ryoma.
- Taken for Granite: Or wax in as part of her execution.
Shuichi SaiharaThe Ultimate Detective and real protagonist of New Dangan Ronpa V3, he chooses to cover up Kaede's crime for her sake and is executed as the blackened for the first trial. His death haunts Kaede constantly while motivating her to find the mastermind.
- Dramatic Irony: Assuming that the audition tapes are valid, Shuichi ended up experiencing the execution he always dreamed of.
- The Lost Lenore: Is this for Kaede.
- No-Holds-Barred Beatdown: How Shuichi's execution is carried out. He gets ganged up by several Monokuma bots holding numerous tools to bludgeon or stab him with. Right after being left within an inch of his life, a flaming arrow shot by a cupid Monokuma hits Shuichi in the heart, giving him an agonizing death.
- Posthumous Character: Shares this role with Rantaro.
- Swapped Roles: In this reality, Shuichi ends up being executed which impacts Kaede's character development while also motivating her to continue the Killing Game in his memory.
Rantaro AmamiThe Ultimate ??? and Kaede's supposed victim. While mentioned by the cast at times, he solely appears in the Amami Theater segments making cryptic remarks about the Killing Game and its victims.
- All-Loving Hero: Easily forgives Kaede for causing his death and looks forward to welcoming those who've died so far.
- Greek Chorus: His Theater segments are featured at the beginning of each main chapter and provide cryptic messages of welcoming the recently deceased to the afterlife and hoping that they can get along.
- Posthumous Character: Shares this role with Shuichi.
Kokichi OmaThe Ultimate Supreme Leader. Although he remains antagonistic towards the other students, he and Kaede trust each other not to be the mastermind despite their animosity with each other.
- Chekhov's Skill: Kokichi's talent for pickpocketing allows him to take Miu's remote and the key to his lab from an unsuspecting Kaito.
- Conspiracy Theorist: In Chapter 5, Kokichi is shown to have written several ideas on how the killing game works and that they're being watched for some reason.
- I Work Alone: Kokichi's response to Kaede's offer to team up right after the third trial.
- Jerkass Has a Point: Makes a point about everyone being a potential murderer in the fourth trial.
- Thou Shall Not Kill: Like in canon, Kokichi has this mentality. It's the main reason he's a lot more hostile with Kaede than Shuichi; he knows she was willing to kill, and got away with it.
- Trickster Mentor: Although Kokichi detests Kaede for getting away with murder, he willingly dispenses ambiguous hints to her that later prove valuable in the class trials.
KeeboThe Ultimate Robot. Keebo's body is fried after the group's visit to the virtual world, though Miu manages to save his AI. While not quite dead, his loss of a vessel counts as a murder, paving the way for the fourth trial.
- Body Backup Drive: Is given this treatment by Miu when his body is damaged beyond repair in the virtual world. Although he's technically alive via AI backup, Monokuma still counts it as a murder.
- Expy: Keebo being murdered by a close friend followed by him 'coming back' as an AI in a portable device makes him similar to Alter Ego.
- Heroic B.S.O.D.: After Miu's death, his AI continues to mourn her while keeping himself isolated from the group.
- I Let Gwen Stacy Die: He blames himself for not being able to save Miu when she asked him to save her moments before her death. Later on he realizes that he has secret functions as part of his Body Backup Drive which he believes Miu hinted at and feels guilty that he didn't act on them sooner.
- Whodunnit to Me?: This is how Keebo's AI backup reacts upon learning of his own death.
Gonta GokuharaThe Ultimate Entomologist, Gonta's friendship with Ryoma keeps him from joining Angie's student council during the third chapter. He later becomes a murder victim because of this.
- He Knows Too Much: The reason he becomes targeted by the mastermind in the third chapter is because he and Ryoma discovered the Nanokuma as the source behind their movements being recorded. Not wanting this secret to be discovered so soon, the mastermind sent him a note that led him to his death by Angie's hand.
- Impaled with Extreme Prejudice: His fate at the hands of Angie.
- The Lost Lenore: Becomes this for Ryoma after his death.
- Morality Chain: His friendship with Ryoma keeps the latter motivated and hopeful, which makes things worse when the third murder happens.
- Super Senses: His vision is so advanced that he's able to detect the microscopic Nanokuma flying around the school grounds.
Korekiyo ShingujiThe Ultimate Anthropologist. He ends up killing Kirumi in a Duel to the Death and calmly accepts his execution when the truth is revealed.
- Adaptational Heroism: Kiyo's murder is more sympathetic here than it was in the game, refusing to deny his guilt and even accepting defeat more graciously, and while his last few moments implicated that he was considering the idea of killing Kaede for his sister, their incestuous relationship is seemingly omitted from this continuity, as is possibly being a Serial Killer, if Kiyo wasn't planning on killing her like he claimed to have killed other girls in canon.
- Demoted to Extra: In this reality, Korekiyo doesn't murder two unsuspecting girls using elaborate murder schemes as in canon. Instead he only goes after Kirumi who agreed to fight him in a Duel to the Death. His role and impact on the overall story is diminished as he's hardly remembered after his execution.
- Face Death with Dignity: Unlike in canon, Kiyo willingly walks to his execution without a fight.
Ryoma HoshiThe Ultimate Tennis Pro, Ryoma survives past the second trial thanks to his friendship with Gonta and Kaede withholding his motive video. He loses the will to live after seeing the outside world in ruins, though the events of the fourth trial cause him to question it.
- Because You Were Nice to Me: Ryoma starts to regain his will to live after befriending the kind hearted Gonta in the second Chapter.
- Death Seeker: Ryoma has this up in spades. When voting for the fourth culprit, he deliberately tries to mislead the group into voting for him so they can be spared of the truth he saw thanks to the motive involving the outside world. He eventually gets over it thanks to Kaede and Tenko.
- The Fatalist: His acceptance of the world being destroyed leads him to throw the fourth trial in hopes of sparing the others of this horrifying fact. It's subverted when Kaede convinces the group otherwise.
- Heroic Neutral: He chooses not to be involved in the drama of his fellow students after trying to get everyone killed in the fourth trial.
- Not So Stoic: Ryoma shows bouts of anger for the death of Gonta who he had become close with.
- Self-Deprecation: He has these moments after nearly getting everyone killed in the fourth trial and surviving bullet shots from Miu's last stand.
- Super Speed: This skill is more recognized in this story as he uses this to help Gonta catch the Nanokuma along with catching up to Kokichi who took the keycard in Chapter 4.
- This Is Unforgivable!: Gives a benevolent version to Gonta in order to convince him not to join Angie's student council. He brings up the fact that giving up on escaping the school would be a huge disservice to his two families waiting for him; the wolves and his human parents.
- Took a Level in Kindness: Shows a more considerate side after befriending Gonta.
Kaito MomotaThe Ultimate Astronaut, Kaito remains a pillar of support for Kaede throughout the story and stands by her side even after she admits to killing Rantaro later on.
- The Atoner: Kaito is shaping up to be this by protecting Kokichi from Maki in order to make up for his initial attempt to murder the former.
- This also applies to the fifth trial where he tries to protect Maki even after she admitted to killing Kokichi as feels responsible for the both of them.
- Break the Badass: In the beginning, Kaito was a boisterous, optimistic man who could smile through the worst of times. The process started with his Humiliation Conga sequence from below which made him require the constant supervision of his friends. Then he ends up admitting to trying to kill Kokichi in Chapter 4 despite him constantly voicing how no one will be murdered under his watch. Then after everything fell apart in Chapter 5 with Maki killing Kokichi despite her promising not to and Kaede wanting to execute Maki out of spite, Kaito is not the same confident man he used to be.
- Chronic Hero Syndrome: Has a case of this in every trial so far which Kokichi mocks him for.
- Humiliation Conga: While he was no stranger to misfortune in the canon source, the story makes it so that he's practically suffering some type of accident every other chapter. As of now, this includes having his foot injured while trying to help the others escape Gonta's Bug Appreciation Party, having said foot accidentally crash into Shuichi's glass portrait during the memorial service, getting hit in the gut by an emotionally distraught Tenko, having to be the object of Kokichi's affection. And to top it all off, his secret illness was revealed to everyone after coughing blood over Kokichi's face at the end of the third trial. Word of God claims that this was unintentional.
- Pet the Dog: Even after learning the truth behind Rantaro's murder, Kaito continues to be Kaede's friend and supports her even when the others are wary of her.
- Team Dad: Kaito ends up being a Deconstruction of this trope. Having to be the only willing mediator for Kokichi and Maki's constant arguing is emotionally exhausting for him. Made even worse by his foot injury and his illness. He often ends up having to put his foot down in anger and yells at them for acting like children.
- Would Hit a Girl: Gets into a fistfight with Kaede in Chapter 5.