Demon Kogure (also known as "His Excellency Demon Kogure", or "Demon Kakka") is the lead vocalist of the Japanese heavy metal band SEIKIMA-II (???II). Demon began his solo career in the early 90's during a break from SEIKIMA-II, where a few all members of the band began their own solo careers. He continued his solo work after SEIKIMA-II disbanded in 1999. His musical style is very diverse but generally revolves around the rock genre. He often incorporates traditional Japanese instruments and themes.