Hari-Koo is the older sister of Doori-Koo, she is sweet but when she gets angry she's, PISSED. She has brown eyes, brown hair tied in a pony tail, she wears a white shirt and a pink sweater with a skull on it, and she wears blue jean shorts and pink and white shoes. Hari is 12 years old. Also Hari-Koo has a crush on Kang-lim

He is a quiet and kind person and he's so quiet that nearly no one can even sense, he is also an exorcist. When he is not fighting spirits he wears a simple long-sleeved navy blue shirt under a casual black open jacket, paired with light gray jeans and black boots. But When he actively battles evil spirits, he instantly switches into a traditional Korean-inspired black exorcist uniform. This outfit features long, loose kimono-like sleeves decorated with distinct red and yellow stripes, white shoulder bands, and gold accents. Kang is 12 to 13 years old

Shinbi is a green, 102-year-old goblin mascot created by God. He is spiritually connected to an apartment complex. He helps human siblings Hari and Doori Koo stop vengeful ghosts by using a Ghost Ball to summon spirits, he is a short, round, lime-green goblin with a playful, cute appearance, wears a very simple outfit consisting of a small sky-blue cape tied around his neck and matching blue shorts. He does not wear shoes or a shirt. He can also grant wishes if Hari or Doori help a spirt cross over to the after life

Doori-Koo is the younger brother of Hari-Koo, he is very kind and love his family and snacks and meeting new people, he is ten years old and a bit chubby, he wears a white shirt and a yellow and light yellow stripped sweater with a jumper suit with white shoes, he has brown hair in a bob cut with blue hair