The Skullkin is a race of Skeletons that are Garmadon's other henchmen with the Doom Clan. they live in the Underworld.
Bonezai - Warrior of Ice (Traitor)
Samukai - King of the Skeletons
Coronal Wyplash - General of Ice
Kruncha - General of Earth
Nuckal - General of Lightning
Chopov - Warrior of Earth
Frakjaw - Warrior of Fire