Ryū (龍/竜, 隆, 流, りゅう, リュウ, Ryū) is a Japanese masculine given name and family name meaning "dragon", "noble", "prosperous", or "flow". Ryū, Ryu, or ryu may also refer to: Fiction. Ryū (manga), a 1986 series by Masao Yajima and Akira Oze. Dragon: the Old Potter's Tale (龍, Ryū), a 1919 book by Ryūnosuke Akutagawa. Monthly Comic Ryū, a manga magazine in Japan. Characters. Ryu (Breath of Fire), the protagonist in the Breath of Fire series. Ryu (Street Fighter), a leading character in the Street Fighter franchise. Ryū Daikōji, a character from Little Battlers Experience.
https://en.wikipedia.org/wiki/Ryu