Helmeppo

Joe Alblas / Netflix Tudum — editorial use, removal on request

The character

Captain Morgan’s spoiled son, humbled by Zoro’s blade and Garp’s training. He and Koby become the live-action’s Marine through-line: two kids learning what justice actually costs.

Character development

From the captain's son who hid behind his father's axe and title, to a trainee carrying two sacks of Garp's homework before dawn. His arc is a rebuild in public: the haircut cut off, the swagger stripped, and something steadier growing in its place — a Marine who has learned exactly what justice costs, because he watched his family name pay for it.

Powers & abilities

• Axe fighting — his father's weapon, reforged with discipline
• Survivor of Garp's training regimen — endurance bordering on the absurd
• A sharpening tactical eye — the plan-maker of the cadet duo

The actor

Aidan Scott — as Helmeppo · Season 1 & 2.

Aidan Scott is a South African actor working out of Cape Town, where the live-action shoots — Helmeppo is his global breakout role, and one of the trickier comedy-drama asks in the young cast: a spoiled brat who has to become someone worth rooting for.

Known for

• One Piece (Netflix, 2023–)

The casting story

Scott was announced with the 2021 main cast. Season 1 played Helmeppo's whole downward arc — the captain's son hiding behind his father's axe, humiliated by Zoro, then taken in by the man who captured the Pirate King. Season 2 continues the rebuild: two kids, Koby and Helmeppo, learning what justice costs under Garp's regimen.

Why this casting works

Aidan Scott plays the haircut, the swagger, and the collapse — then the rebuild under Garp. Helmeppo’s arc is the Marines’ origin story in miniature.

Sources

• Netflix Tudum — cast and characters