Mother of the Deep Ones

“ […] an’ the children shud never die, but go back to the Mother Hydra an’ Father Dagon what we all come from onct—Iä! Iä! Cthulhu fhtagn! Ph’nglui mglw’nafh Cthulhu R’lyeh wgah-nagl fhtagn.”

The Shadow Over Innsmouth, Howard Phillips Lovecraft, 1931
A large fish/human hybrid perched on all fours on top of a large rock jutting out of the sea
Mother Hydra by Brad Hicks

This being resembles Deep Ones, but is enormous in stature and possesses exceptionally great power. She is deeply revered by their people and can be considered the god-mother of all Deep Ones. It is believed that she can exercise power over nature and influence people in dreams.

In many cases, humans chosen by Deep Ones to replenish the gene pool are brought to Hydra  to receive the ordinations of their race from them.


Great Old One: This being is so powerful that they exist and act outside of the human imagination system. Therefore, She does not have values and the game master is free to decide the consequences of direct contact with him. However, an encounter usually means certain death or madness for humans.

Call of Dagon/Call of Hydra: This Great Old One is capable of calling Deep Ones as well as other sea creatures to her, whether for protection or in pursuit of other goals.

Dream Sending: Hydra can send dreams to humans on a limited basis. This almost always involves the immediate coastal regions of their location, or the crew and passengers of passing ships.

Unnatural Knowledge (+1d10): An encounter with this entity necessarily increases the player character’s Unnatural Knowledge by +1d10 points. The player character then simultaneously loses sanity points equal to this amount and suffers the usual consequences. No sanity check protects against this trait. Unnatural Knowledge occurs immediately after the regular sanity check and regardless of its result.

Weather Control: Hydra can summon severe storms at will, as well as doldrums, fog banks, and giant waves. The area of influence of her ability is limited to the sea, islands, and coastal regions.

Yog-Sothothery: Hydra is of elemental importance to all Deep Ones and is central to the social order of the species. How far her contact with the sleeping Cthulhu extends is not known. However, it may be assumed that Cthulhu, the Deep Ones and Hydra and Dagon share much more than only the sea.

HYDRA, Mother of the Deep Ones 

Sanity Loss: 1d10/1d20 (see also Unnatural Knowledge)

This creature description is translated from the German version published by FHTAGN-RPG.

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