Moros comes from a big, mysterious family of night spirits. His mother is Nyx, the powerful goddess of night. Nyx is so ancient and strong that she gave birth to Moros all by herself, according to poet Hesiod. Some Roman writers say Moros's father was Erebus, the god of deep darkness.
Moros has scary siblings who all deal with endings. His sisters, the Moirai or Fates, spin the threads of life and cut them when it's time to go. Brothers like Thanatos, who brings peaceful death, and the Keres, wild spirits of battle death, are in the family too. They all work together under the cover of night.