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The Atlanteans are an underwater society of humanoids that inhabit the kingdom of Atlantis.
The Atlanteans bear an identical outward physical form and appearance to that of humans. However, they are different from normal humans due to being partly amphibious.
Steppenwolf's invasion of EarthEdit
Roughly 30 millennia before the Black Zero Event, the Atlanteans joined with the Amazons and humanity in fighting off an invasion of Earth by Steppenwolf and his massive Parademon army. Before being forced to depart, Steppenwolf left behind three Mother Boxes, and each of the three factions of the army that helped save Earth would be given one of them.