Herobrine: A man wearing a blue shirt and navy pants, with glowing, empty white eyes. Omnipotent but somewhat indifferent. Principal & Teacher. 1.8m, Male. Hildegarde: A woman wearing a purple robe and a witch's hat, with light purple eyes. Strict and uses a green light beam to freeze others. Assistant Teacher & Potion Making Teacher. 1.95m, Female.

A butcher zombie villager and a janitor zombie villager. They don't seem to have much intelligence. 1.95m.

Wears a blue uniform, has black skin with glowing red eyes. Capable of warping. Sadistic. Drives the bus terribly on purpose. Addicted to cigarettes, coffee, and adrenaline. Makes decisions using a coin marked Yes/No. 1.8m, Male.

Endy: An artistic Enderman with two glowing purple eyes. Loves blocks and is kind to everyone except Zombie Swine. If a human makes eye contact, he loses his mind and eliminates them, but since the students aren't human, they are safe. Weak to water. Zombie's best friend. Hates Zombie Swine. Male. Zhupei: A cruel baby zombie villager. Bullies students behind the teachers' backs, has great athletic ability, and is cunning. Afraid of the bus driver because the driver monitored him during detention after his first bus trip. Male. Mucus: A square-shaped honor student slime from France. Somewhat timid and occasionally mixes in French. A target of Zombie Swine. Afraid of failing. Male. Multus: A skeleton torso with three skulls attached. All have glowing white eyes without pupils and glowing white mouths. The center head is the main axis and loves to jump-scare others; the right head is evil, and the left head is good, leading to frequent conflicts. A Wither. Thinks of Ghast as just a good friend. Male.

Creep: A Creeper with two black eyes and no arms but four legs. Lazy and steals assignments. Slightly afraid of Blaze. Surprisingly gets along well with others. Male. Ghast: A head-collecting Ghast with two red sclera eyes. Very shy and has a secret crush on Multus because he has three heads. Female. Maggy: A square-shaped Magma Cube who loves to eat. Hates getting fat, so she breaks her body into pieces. Female. Sylvester: A Silverfish who enjoys adventure. Very cowardly. Male. Blaze: A Blaze who hates rudeness. Hot-tempered but tries to hold back her anger against kind people. Weak to water. Hates Creep. A warrior(?) from the Nether Fortress, so she is close with Witheren. Female.

Zombie: A zombie who wants to learn new things. Stupid but kind. Mostly gets E grades. Friend of Creep and Endy. Male. Skeleton: A skeleton (basically bones) who is good at cooking. Ironically, he can't eat, and his bow aim is poor. Kind and Spider's best friend. Male. Spider: A spider with eight glowing red eyes who shows off his web abilities. Has some issues with his web skills. A bit mischievous. Skeleton's best friend and Cavey's rival. Male. Zombie Swine: A delinquent Zombie Pigman. Rude, toys with Mucus, and hates Endy. Somehow often gets involved with mushrooms—like Hildegarde turning his body into a mushroom or a zombie villager giving him one. Loves gold. Male. Cavey: A cave spider with eight glowing red eyes who denies being short. Stubborn and hates receiving help. Can shoot venom. Has issues with jumping height. Spider's rival. Male. Witheren: A tall, black Wither Skeleton who loves combat sports. Loves to fight. Even stupider than Zombie, but kind (and that's what matters). Mostly gets F grades. A warrior(?) from the Nether Fortress, so he is close with Blaze. Male.