Shuichi appears to have quite a serious and polite personality. He often has negative remarks, frequently blushes and suffers from a cold sweat. With his unsure demeanor, he has a tendency to assume that other people can do things better than him, and he comes across as quite unreliable at first glance. Among the sixteen students, he is a boy who stands out for his submissiveness but also for his level-headedness.

Quite the hassle, aren’t you?

Kazuichi is a highly emotional character, though he tries to play it smooth and acts carefree at first. He is a very jumpy person, easily scared and often screaming in fear. People tend to note his intimidating appearance does not match his compulsive and cowardly personality. Naturally, he has a great fear of dying on the island, which causes a lot of stress and panic for him.

Guys are out of the question.

Kyoko is a stoic, intelligent, and mysterious girl who tends to hide her feelings. She has a calm demeanor and tends to be completely unfazed by most of the events that occur, even at the sight of a dead body. At the beginning of the game, Kyoko often keeps her distance from the other students while investigating. Prior to the investigation to find the way out with no casualties, Kyoko doesn't seem to cooperate with the other students and does most of the investigating by herself. 

Undercover Masquerade.

Nagito first comes off as a polite, friendly, and easygoing, yet somewhat insecure boy. Hajime Hinata even mentions that his bright smile is very comforting. He was the only one that stayed with Hajime while he was unconscious, and expressed concern for his well-being, even after Hajime told him to go away. Though friendly with everyone, he is mostly interested in spending time with Hajime and can be quite clingy, and as a result, Hajime considers him a little annoying and not the most reliable.

Lost in the woods at night.

Befitting of the Ultimate Moral Compass, Kiyotaka is righteous and values order and rules above all else. He takes his role as a student very seriously, shown when he gets upset that there are currently no classes going on during the Killing School Life. He also states he has 10 sets of his uniform so he never runs out and so he is able to wear one every day of the year, even on holidays or days off from school. He is shown to be very polite and respectful, as in original Japanese release.

So troublesome.

Byakuya is a cold and self-centered person who is very reserved. He is not interested in co-operating with others due to his own sense of self-superiority, and his opinion that others are, on the whole, lesser than him. This sense of superiority and black-and-white worldview comes as a result of his upbringing; Byakuya had to prove his worth in battle against his siblings in order to earn his role in the family as heir-apparent, whereas all his other siblings who lost the battle were ineffective

Could it be?

Gundham has an eccentric and somewhat dark personality, his delusions of self-grandeur likely stemming from an inferiority complex and chuunibyou syndrome. He claims that he was gifted with evil powers of the underworld, the result of "an angel and a devil" joining together. Gundham refers to other people as "pathetic human beings" and states that even the gods fear his abilities. He often rambles about his status as "The Supreme Overlord of Ice" and his interest in the dark arts and alchemy.