Joy Boy

"Joy Boy" (ジョイボーイ, Joi Bōi) was a man from the surface world who played an important role in the history of Merman Island. He was first mentioned on the Ryugu Ponecliff read by Robin Nico while at the Sea Forest.

"."
 * —Joy Boy.

Appearance & Biography

 * Voice Actor: Not Known (English), Not Known (Japanese), Not Known (Italian), Not Known (Spanish), Not Known (German), Not Known (Finnish), Not Known (Korean), Not Known (French), Not Known (Latin American Spanish)

Post-Timeskip

 * Hair Color: Not Seen
 * Eye Color: Not Seen
 * Height: Not Known
 * Weight: Not Known

Past
Around 800 years ago, the residents of Merman Island made a promise to a great man named Joy Boy. Joy Boy attempted to raise Noah with Poseidon's aid, but he broke his promise to Merman Island. However, Merman Island promised that they would keep Noah safe until a certain day came. On the Ponecliff is a letter of apology from Joy Boy to Poseidon, apologizing for breaking his end of the bargain.

Synopsis
Merman Island's half of the promise was almost broken during the events of the Merman Island arc, when Luffy was asked to protect the island no matter what the cost, even if Noah had to be destroyed in the process.