Danganronpa Togami

Byakuya Togami (十神 白夜, Togami Byakuya) – The main character, the "Ultimate Affluent Progeny", heir to the Togami Conglomerate and board member of the Council of Global Controllers, who is sent on the run after his identity is stolen by the Ultimate Imposter. In the second volume, Byakuya is presented as having participated in "The Competition" with 15 of his 107 half-siblings as a child for the right to use the Togami name and be the sole heir to the Togami Conglomerate after it is turned into a killing game by the Imposter, using the female persona of Polaris P. Polanski (ポラリス・ポランスキー, P. Poransukī Porarisu) to hide his identity. In the ending of the third volume, it is left ambiguous as to whether or not "The Competition" unfolded precisely as Blue Ink remembered or whether Byakuya actually used this persona during it, due to the censorship of her memories by Borges' K2K System Story A.I..

Blue Ink (青インク, Inku Ao) – Byakuya's biographer, who views him as a god, titling her biography of his life Journey Under the Midnight Sun. Initially presented as Byakuya's older half-sister Shinobu Togami (十神 忍, Togami Shinobu), whom Togami spared from "The Competition" and whose lost left-arm and right-eye he replaced with robotic duplicates (with the eye she names Borges), Blue Ink is ultimately revealed to be The Kudan (件), "the secret to the prosperity of the Togami family name" who Byakuya passed off as Shinobu using Borges' Story A.I. to hide her identity from those who seek her apparent precognitive abilities, building a facsimile of the real Shinobu's personality around her after she (the real Shinobu) 'died' during the events of "The Competition". As an unreliable narrator over the first two volumes due to the censorship of her memories by Borges, it is left ambiguous as to how much of Danganronpa Togami takes place as described by Blue Ink.

The Ultimate Imposter (超高校級の「詐欺師」, Chō-kōkō-kyū no "Sagishi") – A member of Ultimate Despair who steals Byakuya's identity and control over the Togami Conglomerate, sending out a worldwide "World Domination Proclamation" while placing a 24-hour bounty on Byakuya's head (as him) in exchange for control of the Togami Conglomerate, after which point, if Byakuya is not dead, the world will end at his hand. In the second volume, the Imposter is implied by Blue Ink to be Kazuya Togami (十神 数や, Tōgami Kazuya), Byakuya's and Blue Ink's adoptive half-brother and Togami heir; however, after Orvin Elevator also purports to be Kazuya Togami in the third volume, it is left ambiguous as to whether or not the Imposter is Kazuya or a truly unknown third party, refusing to disclose as such to Byakuya or Orvin, stating his true identity not to matter in the slightest to the situation at hand. During the second volume, the Imposter additionally impersonates Hifumi Yamada (山田 一二三, Yamada Hifumi), a classmate of Byakuya's from Hope's Peak Academy, using his identity to infiltrate Byakuya's convent hideout, alongside Gundham Tanaka and Ibuki Mioda.

Hiroyuki Ketouin (ヒロユキケトウィン, Ketouin Hiroyuki) and Yuika Ketouin (ゆいかケトウィン, Ketouin Yuika) – A pair of twin siblings purportedly from the criminal organization known as the Ketouin Conglomerate, who offer to provide Byakuya and Blue Ink safe passage out of the Czech Republic in their black Mercedes-Benz in exchange for "the secret to the prosperity of the Togami family name". In the second volume, it is revealed that these aren't their true identities and it only appeared as such due to Borges' influence on Blue Ink's perspective of them. Their true identities and allegiances are never explicitly revealed, although 'Hiroyuki' is heavily implied to have known Shinobu prior to the events in Prague.

Suzuhiko Ootsuki (すずひこ おおつき, Ootsuki Suzuhiko) – The "Ultimate Hitman" known as Moleman (てぇ ひきこもり, Hikikomori) and Byakuya's older half-brother, who claims he seeks the bounty on his younger brother's head. His true identity without the influence of the Story A.I. is Minoru Oe (大江稔, Oe Minoru).

Sonia Nevermind (ソニア・ネヴァーマインド, Nevāmaindo Sonia) – The Princess of Novoselic, the "Ultimate Princess" and member of Ultimate Despair who uses her knowledge as a board member of the Council of Global Controllers to have the other councilmen killed and knock out Byakuya to get their plan to frame him underway. She is a reoccurring antagonist with her frequent attempts to capture Byakuya while equipped with a private militia, a limo, and a mech suit designed by Kazuichi Soda. She is also responsible for arranging the orbital bombardment of the wider Czech Republic by Togami Conglomerate satellites, publicly using said attacks as an excuse to come after Byakuya personally.

Kazuichi Soda (左右田 和一, Sōda Kazuichi) – The "Ultimate Mechanic" and servant of Sonia Nevermind and Ultimate Despair who sends a series of hand-made drones and automaton statues (operated by a rudimentary A.I. based off of his own personality) after Byakuya in order to attack him.

Sakura Ogami (大神 さくら, Ōgami Sakura) – The "Ultimate Martial Artist" and classmate of Byakuya's from Hope's Peak Academy, who originally wanted to capture him after hearing the proclamation. By the second volume, she learns the truth of the situation and joins her classmate's side.

Orvin Elevator (オーバイン エレベーター, Erebētā Ōrvin) – The Captain of the World Health Organization Infectious Disease Control and Prevention Unit, who purports themselves to be the true Kazuya Togami (十神 数や, Tōgami Kazuya), Byakuya's and Blue Ink's adoptive half-brother and Togami heir, who has a lightsaber grafted to prosthetic arm and romantic attraction towards his sister Shinobu, who also seeks to conquer the world as "Byakuya Togami". In the third volume, Orvin is revealed to have had a Story A.I. grafted onto his body to convince him he was Kazuya.

Mukuro Ikusaba (戦刃 むくろ, Ikusaba Mukuro) – The "Ultimate Soldier" and former Council of Global Controllers bodyguard, who serves the will of her sister, the original Ultimate Despair.

Junko Enoshima (江ノ島 盾子, Enoshima Junko) – The "Ultimate Fashionista" and a classmate of Byakuya's from Hope’s Peak Academy whom he trusts, tasking her to help with investigating the Ultimate Imposter and Ultimate Despair and keeping him informed over video calls concerning the situation at the school.

Toko Fukawa (腐川 冬子, Fukawa Touko) – A classmate of Byakuya's from Hope’s Peak Academy who is obsessed with him, whose alter, Genocide Jill (ジェノサイダー翔, Genocider Syo), acts as Byakuya's bodyguard in the third volume after arriving in Prague to assist her 'master', which leads into a fight against Suzuhiko and Orvin.

K (ミラノクンデラ, Kundera Milan) – An alumnus of Hope’s Peak Academy who participated in the development of the Bible Plan and later the "Story A.I." behind Borges with the Togami family.

The novel includes 18 chapters, which have been collected into three tankōbon volumes,[3][4] the first of which was published in November 2015.[5]