Skulkin

Skulkin refers collectively to the Skeletons of the Ninjago Underworld. A large number of them are found on Crux Prime, where they have set up a mining operation in the Maelstrom Quarry for the extraction of Maelstrom Ore. The undead nature of the Skulkin makes them highly resilient to conventional weaponry. All Skulkin can perform a special brand of chaotic Spinjitzu capable of inflicting massive damage; however, performing this Spinjitzu stuns the said Skeleton for several seconds. They are also highly susceptible to all forms of Spinjitzu, including the new Imagination Spinjitzu taught by Neido in the abandoned monastery. Armed an arsenal of Maelstrom weaponry, they have renewed their siege on the Ninjago Monastery, with the expressed goal of reclaiming the four Golden Weapons.

Types of Skulkin In-game
Types of skeletons on Crux Prime Types of skeletons on Ninjago Monastery
 * Skeleton Miner
 * Skeleton Engineer
 * Skeleton Pit Boss
 * Skeleton Watchman
 * Nuckal
 * Skeleton Mad Scientist
 * Skeleton Trooper
 * Bone Wolf
 * Skeleton Commando
 * Skeleton Overseer
 * Skeleton Marksman
 * Skeleton Blacksmith
 * Krazi
 * Bonezai
 * Chopov
 * Frakjaw

Trivia

 * The in-game Skulkin models show every variety having the signature head of Bonezai. However, the images used for mission briefings show every variety sporting the signature head of Chopov.
 * All skeletons are turned into music loving softies if they are near a smashed speaker rebuilt as a grammaphone. This sweetness stops them from attacking, but not from using Spinjitzu.
 * Mardolf the Orange swears his new “Holographoid Skeleton Powerclutcherizer” invention can disable Skulkin by projecting holograms of attractive female Skeletons. Paradox doubts this, as the existence of Skeleton women has yet to be confirmed.