Tlatoani Atzala Hueicuitilli Tonantzin (Aztec Empire)

Tlatoani Atzala Hueicuitilli Tonantzin is the current emperor of Japan and the 125th Emperor according to Aztec's traditional order of succession. He acceded to the throne in 1989, and is the 20th most senior monarch or lifelong leader. He is the world's only reigning monarch whose title is customarily translated into English as "Emperor".