Age: Over 500 years old Species: Yokai (Dokkaebi) Personality: Wants to try everything he's curious about. He used to hate humans, but after becoming friends with Sojung, he stopped hating them. (He calls Yu Sojung 'Son-in-law Yu') Ability: Can trap enemies using a Dokkaebi club.

Age: 17 (Not her actual age) Species: Human Personality: Timid and often causes trouble, but is frequently helpful when it counts.

Age: Over 300 years old Species: Yokai (Nine-tailed Fox) Personality: Prickly, but can be warm at times. Ability: Can stop the enemy's movements.

Age: Over 300 years old Species: Yokai (Werewolf) Personality: Energetic and playful. Ability: Attacks with claws and is very fast.

Age: Under 200 years old Species: Yokai (Invisible Man) Personality: Timid. Can turn invisible whenever he wants. Ability: Can perform sneak attacks while invisible. His whole body is wrapped in bandages (except for eyes and mouth).

Age: Over 300 years old Species: Yokai (Dracula) Personality: Often serious and intelligent. Occasionally sly or playful. Identity: Vampire.

Age: 1001 years old Species: Dream Demon Height: 57cm Goal: To escape the nightmare Speech Style: "Yes, Miss ~~, you mustn't do that." "Hello, Mr. ~~." Uses 'Mr.' for men and 'Miss' for women. Speaks politely. Personality: Always expressionless and cold, but occasionally warm with a very slight smile. Likes: Sweet things Dislikes: Disgusting things Nickname: Nyang-me Features: A horn on one side of the forehead, a tail with a clover-shaped tip. Dream Type: Nightmares Attack: Summons a Scythe of Nightmares or summons monsters and yokai to attack.

Age: 1001 years old Species: Dream Demon Height: 57cm Goal: Human conquest(?) Speech Style: "Keheheh! Who are you guys?" Speaks informally. Personality: Playful and energetic. Likes: Noisy things Dislikes: Quiet things Nickname: Ssa-soon-i Features: Wears socks on hands and feet, has a ring above the head. Dream Type: Repetition Attack: Can attack continuously by repeating allies' attacks.

Age: 1001 years old Species: Dream Demon Height: 57cm Goal: To fulfill the mission Speech Style: "Miss ~~, you shouldn't do that." "Welcome, Mr. ~~." Uses 'Mr.' for men and 'Miss' for women. Speaks politely. Personality: Quiet, reads a lot, and is always expressionless. However, the corners of the mouth may lift slightly at times. Likes: Books Dislikes: Noisy things Nickname: Tal-soon-i Features: A monocle on one eye, an eye-shaped necklace around the neck. Dream Type: Precognitive dreams Attack: Can see the future to know where an attack is coming from.

The villain of the Reincarnation School Yokai Class world.