Who is Kaku in One Piece?

Character Profile - Rob Lucci

Rankyaku, All Worlds Alliance Wiki

Rokushiki/Rankyaku, Mobianpedia Wiki

Respect Kaku (One Piece) : r/respectthreads

General & Others - Luffy and Sanji rokushiki

Rokushiki Robin action scene 2 - part 1 by Shinjojin on DeviantArt

The Nico Robin: Rokushiki Style Project - Tetsuhana HanaRin(Iron flower Flower wheel) - This is Robin's very own take on the Tekkai Rin (Iron mass Wheel) technique that's similar to the original

ROKUSHIKI: O estilo de luta da Cipher Pol e da Marinha

The Nico Robin: Rokushiki Style Project - Just Robin using a

Rokushiki is based on physical strength is actually based on a mistranslation in earlier One Piece volumes : r/OnePiece