|Vehicles and/or Gadgets||None|
|Occupation||Former minions of Lord Garmadon|
The Skulkin (also called the Skeleton Army) are a group of antagonists in the Ninjago theme. They are a group of skeletons from the Underworld, that worked to claim the Golden Weapons for their master, Lord Garmadon.
The Skulkin featured prominently in Ninjago's 2011 sets, as well as the pilot episodes of LEGO Ninjago: Masters of Spinjitzu. They were the first enemy faction in LEGO: Ninjago, being succeeded by the Serpentine in 2012, the Stone Army in 2013, the Nindroids in 2014 and the Anacondrai Cultists and the Ghost Warriors in 2015.
- The Skullkin appear to be the normal skeletons used by LEGO and not the ones introduced in the Ninjago theme.