Kuo-Toa Religion

Religion for the Kuo-Toa is a very flexible concept. Although there are three major deities that most Kuo-Toa follow - the Sea Mother, the Deep Father, and Loorabooloo - they very frequently switch between them and even make up their own. Due to the influence of psionics throughout the Kuo-Toa people, the power of their belief is so strong, that they can manifest these newly created deities.

Source: Out of the Abyss Pre-Made Adventure