The Deep Ones, also known as Merrow, are arguably one of Lovecraft's most iconic monsters next to the legendary Cthulhu and have inspired innumerable parodies, rip-offs and homages in almost all forms of media imaginable. They are semi-aquatic beasts under the command of Dagon and Mother Hydra, two lesser Elder-Things who are also worshipped by the dangerous religious cult known as the Esoteric Order of Dagon, and their sinister worship of the Great Old Ones often puts them at odds with humanity: however these devious creatures have a liking of interbreeding with humanity to produce monstrous offspring that will grow more and more alien as they grow older until eventually they return to the ocean to be with their own kind.
Deep Ones are described as either a hybrid of man and fish or man and frog, regardless of their traits all depictions show them as followers of the Great Old Ones and they obey the whims of their king and queen without question (some sources have Dagon and Mother Hydra as lesser gods, others simply have them as powerful Deep Ones).
The Deep Ones play an important role as antagonists in the Call Of Cthulhu role-playing universe as well as videogames and literature based on this subgenre of Lovecraftian horror, such as the video game "Call of Cthulhu: Dark Corners of the Earth" where both the Deep Ones and their human cultist worshippers including the "Innsmouth Citizens" within the town of Innsmotuh are the main antagonists.
The are a gang of minor antagonists from the Lovecraftian video-game, Call of Cthulhu: Dark Corners of The World and as their name implies, are the citizens of the eerie town of Innsmouth. Like many of their fellow inhabitants of Innsmouth, they are allied with the Order of Dagon and may also be either Deep Ones in disguise or hybrid human/Deep One spawn.