The Tezcatlipoca figure goes back to earlier Mesoamerican deities worshipped by the Olmec and Maya. Similarities exist with the patron deity of the K'iche' Maya as described in the Popol Vuh. A central figure of the Popol Vuh was the god Tohil whose name means "obsidian" and who was associated with sacrifice. Also the Classic Maya god of rulership and thunder known to modern Mayanists as "God K", or the "Manikin Scepter" and to the classic Maya as "K'awil" was shown with a smoking obsidian knife in his forehead and one leg replaced with a snake.