Ryuichi Kosugi (小杉 竜一, Kosugi Ryūichi, born 5 July 1973) is a Japanese comedian born in Kyoto who performs tsukkomi in the comedy duo Black Mayonnaise along with his partner Takashi Yoshida. His standing position is in the left. He is represented by Yoshimoto Kogyo.
One Third
As Ken
Restart
Alice in Wonderland –Dive in Wonderland–
As Humpty Dumpty (voice)
JAPAN SINKS: People of Hope
As Information Program Commentator
Bura Mayo Sōdanbu Sono Nayami! Kosugi to Yoshida made
Gaki no Tsukai No Laughing Batsu Game
As Guest
Isekai Izakaya "Nobu"
As Frank
M-1 Grand Prix
THE 10ミニッツ！
有吉の冬休み
Yasei Bakudan no za Wārudo Chaneringu
ブラマヨ衝撃ファイル 世界のコワ〜イ女たち
Ningen Kansatsu Variety MONITORING
Murakami Mayonnaise no Tsukko Masete Itadakimasu!
As MC
バナナマン日村が歩く!ウォーキングのひむ太郎
