Kuo Toa as a Warlock Patron?

or, The Fish-Folk Fan Club

Those of you who have dabbled in Dungeons & Dragons may have heard of the Kuo Toa. They are the fish-people (essentially what one would get if they stitched together the unused halves whilst making a mermaid) who are generally evil. They pop up on page 199 of the Monster Manual (2014).

Kuo Toa from the Monster Manual, by Zoltan Boros - image found on Pin…