|Rokkaku||Lieutenant Junior Grade||Active|
After Morgan was promoted from the rank of Chief Petty Officer to Lieutenant Commander for reportedly capturing the infamous "Kuro", and then making his way up to the rank of Captain, he became corrupted with his newfound fame and tyrannized the entire 153rd Branch and the town associated with it for three years, with his son Helmeppo taking advantage of this.
Their reign of terror came to an end when Luffy and Zoro defeated Morgan. He was then dismissed and control of the base passed to Commander Ripper. Koby and Helmeppo were part of the staff of the base until the transfer of the imprisoned Morgan to Garp. During this, Morgan was able to escape and Koby and Helmeppo went under Garp's command and tutelage.
- ↑ SBS One Piece Manga — Vol. 8 (p. 84), Oda explains the organizational structure of the Marines.
- ↑ SBS One Piece Manga — Vol. 6 (p. 124), fan question: Is the man who captured fake Kuro from Chapter 37 Captain Axe-Arm Morgan?
- ↑ One Piece Manga — Vol. 63 Chapter 616, cover story: From the Decks of the World Vol. 4, Rika is shown after the timeskip.