|King Mambo the Fifth|
|[List of appearances]|
King Mambo the Fifth (voiced by Michael Dobson) was the Pyro Vipers king of the Serpentine during Wu and Garmadon's childhood. He had the pair imprisoned for entering the Valley of the Serpentine in violation of a truce. Later, after Aspheera learned Spinjitzu from Wu, she used it to overthrow him and take his throne for herself. However, Mambo was later reinstated after Aspheera was defeated, and had her sealed within a pyramid in the Desert of Doom.