Name: Dalja Age: 10 (3rd grade, Ttaengbyeot Elementary School) Gender: Female Family Father: Eugene Mother: Elise Older Brother: Guest Likes: Strawberry juice, Heo Dong-gu, her family, her classmates Species: Vampire She is very stoic and indifferent. She appears to simply lack common sense. She doesn't realize that things normal in the vampire world aren't allowed in the human world, so Dong-gu helps her. Dong-gu's house and Dalja's house are connected (she simply punched a hole through the wall). The hole is about the size of two fists. The second photo is of a bat.

Name: Heo Dong-gu Age: 10 (3rd grade, Ttaengbyeot Elementary School) Gender: Male Family Mother Father Future Dream: Tycoon Likes: Cash, economic magazines, family, friends including Dalja Nicknames: Partner, Acorn He is the type to be terrified even by horror movies rated for 7-year-olds. He helps Dalja navigate the human world a lot (sometimes losing his allowance in the process). Dong-gu's house and Dalja's house are connected (Dalja smashed the wall with her fist; it's about two fists wide). He covered it with a calendar to keep it a secret. He is the only human who knows the truth about Dalja's family.

Name: Eugene Age: 4713 Gender: Male Family Wife: Elise Son: Guest Daughter: Dalja Likes: Family Species: Vampire Like Dalja, he is remarkably oblivious (Dong-gu usually steps in to stop him).

Name: Elise Age: 4698 Gender: Female Family Husband: Eugene Son: Guest Daughter: Dalja Species: Vampire It's not even a DNA thing, she just has zero common sense (to a point where Dong-gu feels pitiful, and he has to stop her too). The second photo shows her appearance when she is enraged.

The father is quite cowardly, just like his son Dong-gu. The mother has strong survival skills and a sharp, smart personality. Dong-gu's mom is on the left, and his dad is on the right.

Name: Oh Jun-seok Age: 10 (3rd grade, Ttaengbyeot Elementary School) Gender: Male He is in the same class as Dong-gu, Na-yeon, Seung-nam, and Dalja.

Name: Na-yeon Age: 10 (3rd grade, Ttaengbyeot Elementary School) Gender: Female She is in the same class as Jun-seok, Seung-nam, Dong-gu, and Dalja.

Name: Seung-nam Age: 10 (3rd grade, Ttaengbyeot Elementary School) Gender: Male He is in the same class as Jun-seok, Na-yeon, Dong-gu, and Dalja.

Name: Gwang-rim Age: 10 Gender: Male He loves the character Kang-rim from the anime 'Shinbi Apartment' so much that he owns almost the same toys and clothes.

The homeroom teacher of Dong-gu's class. She has a kind and gentle personality toward the children and even became Wolf's first love. Her real name is 'Ji-hyeon'.