Ages ago, Steppenwolf took three mother boxes to Earth to invade the planet by combining the three mother boxes it would turn the planet into a apokoliptian state, but after the Olympian Gods, Amazons, Atlanteans, Green Lanterns, and ancient human civilazation fought off Steppenwolf and his army, the three were left behind by Steppenwolf. They were hidden on the distant planet to be kept from the reach of Darkseid. One was given to the Humans, one to the Amazons, and the final one to the Atlanteans beneath the ocean. They were to be kept and hidden and eventually forgotten about for all of time.
In 1918, after the end of World War I, Etta, Charlie, Sameer, and Cheif were assinged to retrieve the Mother Box that was found and bring it to America to the Amerian's. In 1982, a Mother Box was discovered on Earth, and was taken into the possession of S.T.A.R. Labs.