Kosuke Toriumi (鳥海 浩輔 Toriumi Kōsuke) is a Japanese voice actor notable for voicing the character Guido Mista and his Stand Sex Pistols in the anime adaptation of JoJo's Bizarre Adventure, specifically its fourth season, Golden Wind.
Kosuke Toriumi graduated from Yoyogi Animation Gakuin Voice Actor Talent Department, Japan Narration Actors Institute. His first role was actually for a training video for clerks at a gas station. His proper debut was in the anime Remi, Nobody's Girl as Henry. From 2001 to 2005, Toriumi was a member of the voice actor unit "PKO" of the company Di Gi Charat with Chihiro Suzuki and Tomo Saeki. While in the group, he released CDs and performed live activities, but in 2005 PKO was disbanded in the aftermath of Saeki's illsness.
Toriumi possesses a YouTube channel Torisan Gakkyu (鳥さん学級), which he's created on March 19, 2020.