Kuo-Toa

Kuo-toa are fish-like, amphibious, aberrant humanoids who live in swampy areas. They are half-mad religious zealots, descendants of a once-great race that was pushed deep underground many years ago. Here, they worship mad gods and spawn new numbers, dreaming of the day when they will re-take the surface. Their population nearly exterminated and forgotten, they plot their inevitable resurgence with a despicable glee.

Combat
Kuo-toa employ a cunning mix of secretions, alchemy, and group assault to take out their foes.

The Pincer Staff, a long staff with a restraining claw at the end, is used by some kuo-toans to trap enemies so that the kuo-toa's allies can pummel them without retribution.

Harpoons are employed by kuo-toa to stick enemies, yank them off their feet, and pull them closer if they try and flee.

Sticky Shields are used by kuo-toa to restrain an enemy's weapon: if the foe strikes their shield, the weapon is stuck fast.

Slippery Skin is a feature of the kuo-toan skin secretions. This makes them difficult to restrain, and able to slide out of grapples and other restraints easily. This also makes them resistant to magical restraint.

Lightning Strike is an ability used by several kuo-toa at once, generating a blast of lightning using divine magic.

Truesight lets a kuo-toa see through illusions and deceptions such as invisibility and etherealness.

Kuo-toa are resistant to electricity and force damage, and creatures of elemental water seem to avoid harming them. However, they seem to be vulnerable to bright light and fire.

Society
Kuo-toa worship Mrlglblblgrgl, an incarnation of an ancient and forgotten deity. Their holy sites provide access to salt water, and often serve as spawning points and trade centers.

Amongst other kuo-toa, the creatures are fairly antisocial and independent. Madness is a common ailment amongst the kuo-toa, their degenerate nature encouraging a weak mind.

Enemies
Kuo-toa tend to dislike their neighbors, and tend to solve this dislike by getting rid of them. They often feud with lizardfolk.