Kuk is the god of darkness. He is frog-headed. Like all 4 dualistic concepts in the Ogdoad, Kuk's male form was depicted as a frog, or as a frog-headed man, and the female form as a snake, or a snake-headed woman. As a symbol of darkness, Kuk also represented obscurity and the unknown, and thus chaos. Also, Kuk was seen as that which occurred before light, thus was known as the bringer-in of light.