Former manager of Tartarus. He gathered evidence of President Lee Yongjun's unfair treatment of Tartarus members while working as an employee. He blocked Goo Won's car to deliver the evidence, claiming he believed Goo Won was a good person who would help Tartarus. However, Goo Won suspected his true motive was to gain favor and possibly use the evidence for blackmail in the future. He provided both a thick envelope of evidence and a USB copy.