A skilled Korean contract-killer hired by Yeom to eliminate the resistance members. He spares Ahn Ok-yun, sympathizes with her cause, and ultimately kills Kang In-guk to protect her from becoming a mercenary. He shares a final moment with Ahn before being murdered by Yeom.
They first encounter each other as opposing combatants during the assassination mission.
Hawaii Pistol locates Big Gun in Seoul and shoots him while he is running. Big Gun is initially treated as one of the resistance members Hawaii Pistol...
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