Vegapunk was clearly building up to a huge reveal about Joyboy’s true identity, but the manga cuts him off mid-sentence, so what he was going to say is still intentionally unknown and not confirmed in canon.

What Vegapunk Actually Says About Joyboy

So far in his recorded message, Vegapunk does clearly reveal several big facts before he gets interrupted:

  • Joyboy was born in the Ancient Kingdom during the Void Century, around 900 years ago, and belonged to that highly advanced civilization.
  • Joyboy was the first person to be called a pirate and sailed the seas with the power of the same Devil Fruit Luffy now uses (the Nika fruit).
  • Joyboy led a “robust faction” in a massive war against the 20 kingdoms that would later become the World Government, and the Void Century ended with Joyboy’s defeat.
  • Joyboy tried to preserve the three Ancient Weapons for the future, which horrifies Vegapunk and makes him question who is truly in the wrong in history.

All of this is explicitly stated as part of Vegapunk’s broadcast before the very end of the speech.

The Cut-Off Line: “Joyboy is his ————”

Near the end of the compiled text of Vegapunk’s speech, the crucial line appears:

“That is simply the truth: Joyboy is his ————”

Right here, the transmission text shows a break, and other characters (like Shaka) cut in, talking about whether the world is “ready” to hear this and how the information could be manipulated.

So what Vegapunk was about to say is some kind of relationship or identity statement: “Joyboy is his ______.” But the word after “his” is never shown, leaving it as a deliberate blank for now.

Most Popular Fan Theories (Not Canon)

Since the manga does not fill in that blank yet, fans have spun a lot of theories on what Vegapunk meant. These are speculations , not confirmed facts:

  1. “Joyboy is his ancestor” (Luffy’s ancestor)
    • Idea: Joyboy is a direct blood ancestor of Luffy from the D. lineage.
    • Basis: The D. clan, Luffy’s parallels with Joyboy, and Joyboy’s similar powers.
  1. “Joyboy is his previous self / reincarnation link”
    • Idea: Luffy is either Joyboy’s reincarnation or the “successor” chosen by the will of the Nika fruit.
    • Basis: The fruit “choosing” its user, Zunesha calling Luffy “Joy Boy,” and the way the world itself seems to “wait” for Joyboy’s return.
  1. “Joyboy is his enemy” (Imu’s or the World Government’s)
    • Idea: Vegapunk might have been about to tie Joyboy directly to the hidden king Imu, as “his enemy” or “his greatest threat.”
    • Basis: Vegapunk confirms Joyboy’s war was against the precursor to the World Government, and Imu seems to be at the top of that system.
  1. “Joyboy is his sin / greatest mistake”
    • Idea: Vegapunk could have been linking Joyboy to his own “two sins” (eternal energy research and recreating the man-made disaster) and calling Joyboy “his sin” symbolically.
    • Basis: In the speech, Vegapunk talks at length about how he proved the old cataclysm is possible again and questions Joyboy preserving the Ancient Weapons.

Again, these are all interpretations from the community, YouTube breakdowns, and forum discussions, not actual finished dialogue from the manga.

So, What Was He Going to Say?

From the official text we have, the only fully safe, accurate conclusion is:

  • Vegapunk was about to reveal a direct, personal connection or definition like “Joyboy is his ____,” clearly framed as a final truth about Joyboy’s identity or role.
  • The story intentionally censors that word, turning it into one of the current central mysteries of One Piece lore.

Until that missing word is shown on-panel in a future chapter, anything beyond “he was about to define Joyboy’s relationship to someone or something” is speculation, no matter how popular the theory.

Information gathered from public forums or data available on the internet and portrayed here.