Romanized Name: Hakku
Japanese VA: Kōsei Hirota
Debut: Chapter 706; Episode 633
Japanese Name: ハック
Funi English VA: Garrett Schenck, Kent Williams (in some episodes)
Epithet: "Hundredth Dan Hack" (百段ハック, Hyakudan Hakku)(Viz: Hundredth-Degree Hack)
Affiliations: Revolutionary Army
Occupations: Fish-Man Karate InstructorFish-Man Jujutsu Martial Artist
Official English Name: Hack