The expansive world of One Piece is filled with intriguing characters who had been foreshadowed for years before being revealed.

The Red Line splits the One Piece world in two—here’s what it is, how it formed, and why it matters to the Grand Line and the story.

One Piece's Meito classifies swords into Supreme, Great, Skillful, and Grade Blades based on quality, rarity, and renown. Aside from legendary swords, the series features unique non-sword blades ...

The One Piece Sword God Theory suggests that Zoro's scar is actually a seal that is hiding Ryuma's will which will be his next power up in the story.