|Weapon of choice||Varied|
|First Appearance||Ghost Story|
Skreemers were ghostly, green creatures who allied with Morro and his warriors. If they attached themselves to a human's head, the human would turn into a ghost. Skreemers, like the rest of the Ghost Warriors, also had voracious appetites, which is notably seen in the sets; they always carry some form of food or another. The Skreemers did not make a true appearance until the final two episodes of Season 5. Up to that point, their head had appeared on the Soul Archer's arrows.
Skreemers are low-level ghosts from the Cursed Realm. Fast, but not very bright, they are pure ghostly energy. Their touch can temporarily turn someone into a ghost. They got their name from the fact that they scream loudly as they fly. Morro often flies into battle with multiple Skreemers backing him up.
- 70730 Chain Cycle Ambush
- 70731 Jay Walker One
- 70733 Blaster Bike
- 70734 Master Wu Dragon
- 70735 Ronin R.E.X.
- 70736 Attack of the Morro Dragon
- 70737 Titan Mech Battle
- 70738 Final Flight of Destiny's Bounty
- Ninjago Rush
- LEGO Dimensions
- LEGO Ninjago: Masters of Spinjitzu
- The Skreemers' appearance is most likely based on Slimer from the Ghostbusters franchise. The Screamer pieces were also use in the Firehouse Headquarters from the Ghostbusters line. The pieces were recolored in blue and pink for the Pink Ghost and Blue Ghost.