Summary
Wadatsumi, known by the moniker "Onyudo," is a massive tiger blowfish fishman who serves as a crew member of the Flying Pirates, led by Captain Vander Decken IX. His nickname translates roughly to a large, bald-headed monster or giant. While Usopp mistakenly identifies him as an "Umibōzu"—a term meaning sea bonze referring to a Japanese mythological spirit—Wadatsumi’s actual name is derived from Watatsumi, the Shinto sea god and dragon. He first appeared in Chapter 606 and Episode 525.
