Affiliated with Korea's White Tiger Guild, C-rank hunter Go Myunghwan serves as a martial artist specializing in close-combat techniques. His abilities position him as a competent C-rank combatant, contributing to mid-tier dungeon operations and training newer recruits.

During a perilous Red Gate training raid alongside low-rank hunters including E-rank Sung Jinwoo and Han Songyi, raid leader Kim Chul abandoned weaker members like Go Myunghwan to prioritize his own survival. Go Myunghwan survived solely due to Jinwoo’s intervention, which shielded the group from ice elves and an antagonistic A-rank hunter. Jinwoo ensured the safe escape of Go Myunghwan, Han Songyi, and fellow Baekho Guild members.

Post-incident, the White Tiger Guild enforced silence regarding Jinwoo’s role. Yoo Myunghan, chairman of Yoojin Construction and father of hunter Yoo Jinho, later contacted Go Myunghwan for a firsthand account. Myunghwan provided detailed testimony, explicitly crediting Jinwoo as the group’s savior. He expressed visible excitement and admiration while recounting Jinwoo’s feats—effortlessly defeating Kim Chul and overcoming the gate’s monsters. This testimony revealed Jinwoo’s hidden involvement to Yoo Jinho and critically informed Yoo Myunghan’s subsequent decisions.

Meeting the Yoo family, Go Myunghwan exhibited significant nervousness around Chairman Yoo Myunghan, attributed to the chairman’s formidable reputation. He displayed profound shock upon witnessing the typically stern chairman smile, an occurrence noted as highly unusual.
Go Myunghwan’s role centers on providing a critical eyewitness account linking Jinwoo to the Red Gate survival and demonstrating Jinwoo’s impact on those rescued.