The Deep Ones are fictional creatures in the Cthulhu Mythos of H. P. Lovecraft. The beings first appeared in Lovecraft's novella "The Shadow Over Innsmouth" (1931). The Deep Ones are a race of frog-like, ocean-dwelling creatures with an affinity for mating with humans.
Numerous Mythos elements are associated with the Deep Ones, including the legendary town of Innsmouth, the undersea city of Y'ha-nthlei, the Esoteric Order of Dagon, and the beings known as Father Dagon and Mother Hydra. After their debut in Lovecraft's tale, the sea-dwelling creatures resurfaced in the works of other authors, especially August Derleth
The Deep Ones and the Esoteric Order of Dagon have become a powerful faction in the Strange Aeon, to the point that they field their own lovecraftian war machines.
The EOD has conquered many coastal areas and islands, including Iceland, Newfoundland, Sardinia, Polynesia, Micronesia, most of the Caribbean, Greenland, the Azores, and the coasts of western Africa, Spain, Ireland, Italy, Taiwan, New England, South Africa, northern Brazil.