The Egyptian fertility god Osiris is one of the most important gods in ancient Egyptian mythology. He was the god of the underworld and the afterlife, and was also associated with fertility and resurrection. He was believed to be the father of Horus, the god of the sky. Osiris was often depicted as a mummified man with green skin, wearing a crown and holding a crook and flail. He was worshipped throughout Egypt and was believed to bring fertility to the land.