Mishima has disheveled gray hair and light brown eyes hidden behind his circular spectacles. He wears a brown suit with a lime-colored undershirt worn with a tie, alternating between green and orange stripes.
He wears a collar as do all participants, dummies, and floor masters. Like all of the participants, Mishima wears one that was especially made for human usage.
Being a little odd, Mishima often puffs mad scientist laughs after sentences, and his emotions often conflict with his appearance. Mishima seems to enjoy acting strange to amuse others, behaving cryptic and overly analytical of everyone's actions. His unusual social quirks aside, Mishima makes it clear he has no ill intentions and frequently reminds others to be safe and cautious. Despite appearances, Mishima is an incredibly kind, caring and encouraging person. After his A.I. self learned about how much suffering Nao was going through after his death, he could only blame himself for it. He deeply regrets not being able to live longer, because he truly just wanted to protect Nao. He also regrets not being able to live on to see Nao continue to grow, as well as his other students.
He's shown to not only be caring towards Nao though, but he also shows great concern for Kanna and even helps to spur her onward towards hope, albeit by lying about the circumstances of the first trial.
Not much is known about Mishima's life, though his A.I. self mentions only two major points in his life; these being the day he became a teacher and Nao Egokoro's graduation. Even after Nao's graduation, she still visits his atelier to learn more about art from him. He greatly cares for Nao and their bond is incredibly strong.
The Death Game
|Person||What they call Mishima||What Mishima calls them|
|Sara||Professor Mishima||ミシマ先生, Mishima-sensei?||Miss Sara||サラさん, Sara-san?|
|Joe||Mishima||ミシマ先生, Mishima-sensei?||Joe||ジョーくん, Joe-kun?|
|Shin||Mishima||ミシマさん, Mishima-san?||Sou||ソウさん, Sou-san?|
|Gin||Old guy||おっさん, Ossan?, lit. "Old man; uncle"||Gin||Gin-kun|
|Kanna||Mr. Mishima||Miss Kanna||Kanna-san|
|Q-taro|| Old man|
| おっさん, Ossan?, lit. "Old guy; uncle"|
|Reko|| Nutty professor|
| ヘンテコ教師, Henteko kyōshi?, lit. "Weirdo teacher"|
|Nao||Professor||先生, Sensei?, lit. "Teacher"||Miss Nao||Nao-san|
|Mishima (self)||私, Watashi?|
- His likes are listed as painting, his students, and tea in his character profile.
- The kanji that makes up his first name are 和, kazu?, lit. "peace" and 己, mi?, lit. "oneself".
- He had a 3% chance of winning the Death Game.
- While naming Midori in Chapter 3, Part 1, Mishima is the only survivor of the First Trial that does not generate a reaction from him.
|Participants||Sara Chidouin • Joe Tazuna • Keiji Shinogi • Shin Tsukimi • Kanna Kizuchi • Gin Ibushi • Q-taro Burgerberg • Reko Yabusame • Alice Yabusame • Kazumi Mishima • Nao Egokoro • Kai Satou|
|First Trial victims||Kugie Kizuchi • Megumi Sasahara • Hinako Mishuku • Naomichi Kurumada • Shunsuke Hayasaka • Anzu Kinashi • Mai Tsurugi • Ranmaru Kageyama|
|ASU-NARO||Sue Miley • Rio Ranger • Tia Safalin • Gashu Satou • Meister • Man from the Memorandum • Maple|
|Other||Sou Hiyori • Mr. Chidouin • Mrs. Chidouin • Ryoko Hirose • Botsun • Girl from the Memorandum|
|Survival Island characters||Rei • Jin Mutou • Touko Rikuno|