Katana Man (real name unknown) is a character from the manga series Chainsaw Man, also known as Samurai Sword is a human-devil hybrid who merged with the Katana Devil. His grandfather was the Debt Collector killed by Denji and because of that he teamed up with Sawatari Akane to get revenge on Denji and steal his heart. He is the primary antagonist of the titular Katana Man arc.