Yuichiro "Jienotsu" Nagashima (長島☆自演乙☆雄一郎, Nagashima Jien'otsu Yūichirō; born July 2, 1984) is a Japanese cosplayer, retired kickboxer, mixed martial artist, known for his career in K-1.
Source: “Yuichiro Nagashima”, English Wikipedia (CC BY-SA 4.0), excerpt