Suppiluliuma or somehow related to him.

http://news.utoronto.ca/archaeologists-unearth-extraordinary-human-sculpture-turkey

A lengthy Hieroglyphic Luwian inscription, carved in raised relief across its back, records the campaigns and accomplishments of Suppiluliuma, likely the same Patinean king who faced a Neo-Assyrian onslaught of Shalmaneser III as part of a Syrian-Hittite coalition in 858 BC.