One Piece Odyssee

Shiryu is a tan man of notable height. He has a long face with a wide-bridged nose, a full-lipped mouth seen perpetually smoking a big cigar, and a wide, jutting, flat-ended chin. He had the typical officer's peaked cap with a dark-blue crown and black, low-set visor, plus a red cap band holding a frontal badge of the winged, crowned Impel Down insignia. Below, he wore what resembled a white aviator cap, the earflaps containing built-in hearing aids of sorts, consisting of perforated rings surrounding diaphragms. Below he donned a dark-blue, double-breasted trench coat that was below knee-length, and with a buttoned collar bearing a red patch of the aforesaid insignia on each wing. On Each upper arm was a red brassard with said insignia, which was further borne as a buckle by the light-brown belt present for the coat. Additionally, Shiryu wore brown, color-matching gloves and boots, below elbow and knee length respectively, and dark-green pants tucked into the latter.

Shiryu is a bloodthirsty psychopath who seems to enjoy killing people any time he can. He used to exploit his Head Jailer privileges extensively to massacre many prisoners within the walls of Impel Down, just for sheer pleasure, justifying his acts by reasoning that none would care if he disposed of "trash".

Though the guards of Impel Down have permission to kill prisoners for security reasons, Shiryu heavily abused that authority by killing many prisoners for his own pleasure. When confronted by Magellan, Shiryu's abuse of his privilege was revealed, and he was deemed to be a menace. For that, he was sentenced to death and placed in a cell on Level 6. As Level 6 prisoners' crimes are deemed too dangerous or embarrassing to be made public, Shiryu's crimes were not heard of by most prisoners, despite their brutality. He was eventually freed by Blackbeard and joined his crew, becoming one of his Admirals