The Nio (Benevolent Kings) are a pair of protectors who stand guard outside the temple gate at most Japanese Buddhist temples, one on either side of the entrance. In Japan, the gate itself is often called the Niomon (literally Nio Gate). Their fierce and threatening appearance wards off evil spirits and keeps the temple ground free of demons and thieves.
http://worldvisitguide.com/salle/MS03819.htmlGanriki to the max:
http://worldvisitguide.com/oeuvre/photo_ME0000091139.htmlRegards,
Ian