Four Heavenly Kings
"Kōdōkan Shiten'nō" (講道館四天王) literally translates as "Four Heavenly Kings" "of the Kōdōkan". "Shiten'nō" refers to four "Devarajas", Hindu gods, historically adapted by Japanese Buddhism. Traditionally, the Four Heavenly Kings are the guardian gods that are worshipped as the protecting deities of Buddhist sanctuaries.