
Quick answer — Hiroya Egashira voices Kazuomi Housen in Classroom of the Elite 4th Season: Second Year, First Semester, Monban in Sleepy Princess in the Demon Castle, Leslie Lippman in The Darwin Incident and 4 more characters.
Hiroya Egashira voices Kazuomi Housen (Classroom of the Elite 4th Season: Second Year, First Semester), Monban (Sleepy Princess in the Demon Castle), Leslie Lippman (The Darwin Incident), Ouhou (Sengoku Youko), Shimojima (SNOWBALL EARTH), Takako (The Villager of Level 999), Kaoru Shindou (Tokyo 24th Ward).
Kazuomi Housen is voiced in Japanese by Hiroya Egashira.