Samurai Sword is a human-devil hybrid who merged with the Katana Devil. He's best known for his vendetta against Denji, which stems from a deeply personal reason: Denji killed his grandfather. Driven by this need for revenge, Samurai Sword eventually aligned himself with the Gun Devil, hoping to use that connection to finally get his chance at Denji.
Content compiled by AnimeList.moe from publicly available sources.
