Two monuments at Tikal, Stela 4 and Stela 18, are associated with Yax Nuun Ahiin I. Both stelae depict him in Mexican rather than Mayan attire, demonstrating his Teotihuacano origins. He is also depicted on Stela 31, erected by his son Sihyaj Chan K'awiil II, as a Teotihuacano warrior with a plated helmet, spearthrower and square shield decorated with the face of Central Mexican deities. His wife's titles indicate that she may have been a Mayan woman, presumably chosen to integrate his bloodline with the local elites.