Huitzilopochtli, the Principal Aztec God - This illustration depicts Huitzilopochtli, holding a turquoise serpent or rattlesnake in one hand and a shield with the five directions of space and three arrows in the other. Huitzilopochtli wears a hummingbird mask or helmet with feathered quetzal crown, which is identified with the two Moctezumas (or Montezumas). Huitzilopochtli, whose name means "Blue hummingbird on the left," was the Aztec god of the sun and war. The xiuhcoatl (turquoise or fire serpent) was his mystical weapon.