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Skreemers are antagonists that appear in the fifth season of LEGO Ninjago: Masters of Spinjitzu. They are ghostly, green creatures who ally themselves with Morro and his warriors. If they attach themselves to a human's head, the human will turn into a ghost.
Skreemers like the rest of the ghost warriors also have voracious appetite, 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 two final episodes of Season 5, up to that point their head had appeared on the Soul Archer's arrows.
- They bear a slight similarity in appearance to Slimer.
- The only way to deal with them is by using the Ghost Trap as either one of the 1984 Ghostbusters (i.e. Peter Venkman), or using the 2016 Ghostbusters (i.e. Abby Yates).
- Despite being Ninjago characters, they have only been confirmed to appear in Ghostbusters levels.
- A Skreemer appears as a part of one of Ray Stantz's idle animations.