Den

Name

デン (Den)

Status

alive

Affiliation

Forest of the Sea

First seen

Ch. 616

“Tom’s little brother” · alive · merman shipwright / Forest of the Sea researcher · first appearance Ch. 616

Profile

The younger brother of the late Water Seven shipwright Tom, captioned “DEN — Tom’s little brother, Shipwright and Forest of the Sea Researcher (Bering Wolffish Merman)” (Ch. 616 p. 12). He lives in and studies the Forest of the Sea, the “Graveyard of Ships” northeast of Fish-Man Island.

Fish-Man Island — first appearance (Ch. 616)

Notes

• §Races: race: merman → member of Merfolk (the §Races split actioned Ch. 612). Distinct from his fish-man brother Tom — the chapter uses the two to illustrate fish-man/merman atavism (a child can resemble a distant ancestor). See Fish-Man And Merman Heredity Atavism A Child Resembles A Distant Ancestor.
• Family lineage: Tom.
• Etymology: Japanese name is plainly デン (Den) — no documented kanji/SBS gloss. The sourced etymology is his animal design: a Bering wolffish merman (オオカミウオ ōkami-uo, “wolf-fish”; Anarhichas orientalis, fam. Anarhichadidae), the “Bering” from the species’ Bering-Sea range, the protruding fangs from the wolffish’s canine teeth. Brother Tom (トム) is modeled on Ken Follett’s Tom Builder (The Pillars of the Earth) — the cathedral architect who teaches his apprentices, mirroring Tom mentoring Iceberg and Franky. No documented Tom↔Den name pun; no name-encoded future reveal, so no Foreshadowing entry. Sources: One Piece Wiki (Den, Tom), Wikipedia (Anarhichas orientalis). Confidence: medium.