Who was the king of the Aztecs when Hernan invaded the Aztecs?

When Hernan Cortes invaded Tenochtitlan and the Aztec empire, the Aztecs were being ruled by Moctezuma II. Moctezuma was a very religious men so he thought that Cortes was the god Quetzalcoatl coming back to his land. Before the Spanish conquistador came to Mexico, about 9 omens (weird signs or things that happened that meant that a big change was coming) appeared, so Moctezuma thought that those omens meant that Quetzalcoatl was coming back.

Later Hernan Cortes used this as an advantage to conquer the Aztec empire.