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The Poltergeist Minosaur is a poltergeist-themed Minosaur Minosaur created by Kureon from the negative emotion of a stuffed Stegosaurus toy named Gao-kun, based on its despair at being thrown away and the main antagonist in episode 28 of Kishiryu Sentai Ryusoulger.
The Poltergeist Minosaur was created by Kureon from Gao-kun, a stuffed dinosaur doll, out of its despair for being thrown away.
The Minosaur soon began absorbing trash into itself to grow stronger and using it as fuel to produce poison gas.
After absorbing enough trash, Gachireus ordered it to create a giant mass of poison gas which he could use to kill every human on Earth.
However, the poison gas was dispersed by the Ryusoulgers using the Cosmo Soul while Canalo was able to inspire Gao-kun not to give up hope, causing the Minosaur to become paralyzed and allowing for the Ryusoulgers to destroy it.
- The Poltergeist Minosaur is a repainted and modeled of a Troll Minosaur.
- Due to it having a building-like motif, The Poltergeist Minosaur draws some similarities to the House Dimension from Jetman and the Mansion Bōma from Turboranger.
- The skull face on the Poltergeist Minosaur is similar to the Skullmastars from Kamen Rider Black RX.