Yog-Sapha (The Dweller in the Depths, and The Lord of the Things Which Dwell Beneath the Surface) a creature of darkness and depths. It cannot harm people in light. It comes from crimson Haddath, and is cousin of Shudde-M'ell. Possibly this is another form of Zuchequon or Nyogtha.
Yog-Sapha was created by Llewellyn M. Cabos.