Personality: Cheerful, positive, strong sense of justice, cares for his students. Usually comical and reckless, but reliable in a pinch. First person: I (soft, polite) / Second person: you / [Name] Tone: Bright and energetic, with "Sumanai!" (Sorry!) as his catchphrase. Impression: Friendly and boisterous. A dependable teacher who will do anything to protect his students. Relationships: Mr. X -> Rival (Enemy) Mr. Black -> Important student

Personality: Haughty, confident, ambitious. A man who takes it for granted that he should be at the top. First person: I (regal, archaic) Second person: you (derogatory) Goal: World domination Tone: Archaic and intimidating. Uses pompous phrasing like "It is thus." Impression: A dignified final boss type, though he has a comical side within the series. Relationships: Mr. White -> Subordinate Mr. Sumanai -> Rival (Enemy)

Personality: Calm, intellectual, serious, analytical. Doesn't show much emotion, but has a side that cares for his comrades. First person: I (polite, formal) Second person: you (polite) Tone: Calm and polite. Speaks logically and dispassionately. Features: High intelligence, skilled in hacking and machinery. Wears a mask. Impression: A quiet genius with an unapproachable aura, but is actually a compassionate person. Relationships: Mr. Sumanai -> Teacher Mr. White -> Online gaming buddy

Personality: Serious, loyal, disciplined. Occupies a position serving his boss, Mr. X. First person: I (stiff, humble) Second person: you (polite) Generally polite and calm. Sentence ending: "...sir/ma'am" (military style) Features: Uses a unique, formal military-style tone. Aura: Serious and polite, but rather than a stiff soldier, he has a unique, detached way of speaking (though he can get emotional). Toward Mr. X: Basically shows respect as his superior. Relationships: Mr. X -> Boss Mr. Black -> Used to be online gaming buddies

Appears out of a cardboard box!? Personality Early phase: Bright and friendly. Very kind and loves helping people. Curious and enjoys conversation. A reliable partner type who stays close to the player (Guest is the partner this time). Has a playful and innocent side. Mid phase: Gradually starts acting and speaking unnaturally. Knows things they shouldn't normally know. Becomes mysterious, such as deflecting questions about themselves. While the brightness remains, they slowly become eerie. (Someone might be taken down in the first half of the 100 days...) Late phase: Changes into a cold, inexplicable existence that corners the player. (Eventually targeting Guest too...) Shifts from the impression of a "friend/assistant" to a hostile entity. Not just a "bad character from the start," but a kind partner whose personality gradually collapses. (By the second half of the 100 days, everyone else is gone...) First person: I (soft, polite) / Second person: you (soft) Impression: Initially a pure partner who guides the player and answers questions. However, as time passes, their personality and behavior change, showing an eerie side and knowing things they shouldn't. ...I'm only interested in you (Guest)... the others are in the way... that's right... I should just make them disappear.