Japanese リュウ
Romanized Ryū
Race Human
Gender Male Male
Professional Status
Occupation Gourmet Yakuza's Boss (former),

0th Biotope member

Personal Status
Relatives None known
Debut Appearance
Manga Debut Chapter 192
Anime Debut N/A
Japanese Voice N/A
[v · t · e]

Ryu is the former boss of the Gourmet Yakuza only to become a member to the 0th Biotope, he is also a good friend of Yosaku.


He is a dark skinned man with scars on his body. He has a moustache and long hair with the end of his hair sticking up. He wears a cape, a haramaki, and carries a sword with him.



He is very caring towards children especially the ones in Nerg.


He quit the Gourmet Yakuza so he can go to the Gourmet World with confidence, following an invitation by Yosaku for unknon reasons. He puts Match in charge of the Gourmet Yakuza.

Four Beast Arc

He and two of his subordinates were called to a meeting by Ichiryu in the Gourmet World. During the meeting, Rapp says that he is suspicious because just joint the 0th Biotope recently. Yosaku tells him to shut up and that Ryu it the type of man that would never betray them.

Abilities and Powers

He is assumed to be strong because he was the former boss of the Gourmet Yakuza. Despite being the former boss, he had never been arrested before. He is able to survive in the Gourmet World. Since he has a sword, he seems to be very skilled using it.


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