Manga - Anime
Official English Name:
Lieutenant Junior Grade Rokkaku was one of Axe-Hand  Morgan's officers at his East Blue Marine Base.
Rokakku has tanned skin, with prominent cheekbones and a black (light color in the manga) mustache and beard. He has a scar above his right eye.
Romance Dawn Arc Edit
When Morgan discovered
Rika's intrusion in the Marine base, he ordered Rokkaku to kill her, but he refused. Afterwards, Morgan attacked him with his axe-hand.
After the Timeskip Edit
Rokkaku eating at Rika's table.
After the timeskip, Rokkaku is shown to have survived his former
captain's attack. He is also still working in the same Marine Base. 
Video Games Edit
Non-Playable Appearances Edit
His name apparently comes from a villain in Romance Dawn v.2, a prototypical One Piece manga. This is the only resemblance between the characters. Interestingly, Rokkaku (lit. Hexagon) has a face shaped like his namesake.
One Piece Blue: Grand Data File,
his name is revealed.
One Piece Manga and Anime — Vol.
1 Chapter 4 and Episode 2,
Morgan attacks Rokkaku.
One Piece Manga — Vol.
63 Chapter 616,
Rokkaku appears for the first time after the timeskip.