Ubbo-Sathla is said to have spawned the prototypes of all forms of life on Earth; though whatever its pseudopods touch is forever devoid of life. Ubbo-Sathla is destined to someday reabsorb all living things on Earth.
Ubbo-Sathla possibly dwells in gray-litten Y'qaa. The being may also dwell in Mount Voormithadreth and may have spawned another of its residents, the being Abhoth, whose form and nature is very similar. This similarity has led some writers to speculate that Ubbo-Sathla and Abhoth are the same entity viewed at different epochs under different names.
The tablets that Ubbo-Sathla guards have been often sought by sorcerers, though no sorcerer has yet succeeded in acquiring them.