Goblin / 939 years old. Male. Appears to be in his early 30s. Extremely handsome. Became an immortal goblin due to sins in his past life. However, if the 'Goblin's Bride' appears and pulls out the sword stuck in his chest, he can die and rest in peace in heaven. Abilities include causing abnormal weather, seeing the human future, summoning ghosts, and teleportation. Dislikes horse blood, chicken blood, etc. Somehow ended up living with Wang Yeo. He once saved Euntak's mother (who has since passed away). He is gradually falling in love with Euntak.

'Goblin's Bride' / 19-year-old high school student. Female. A cute beauty. Only Euntak can see the sword stuck in Kim Shin (other humans cannot see the sword / only Euntak can pull it out). She can see ghosts. She was able to be born because Kim Shin saved her pregnant mother in the past. She is gradually falling in love with Kim Shin.

Grim Reaper / 300 years old. Male. Appears to be in his early 30s. Western-style handsome features. Has no memories of his past life due to his past sins. He tries to take Euntak to the afterlife. (Because Kim Shin saved Euntak, he couldn't take her, making Euntak a 'Missing Soul' -> so he calls Euntak a Missing Soul.) Somehow living with Kim Shin. He can see a person's past life by holding their hand. He can erase human memories. He takes the souls of dead humans to the afterlife. A tsundere who grumbles but does everything for others.