|Earth Condemnation Group Yuumajuu
Ten-thousand years ago, the Yuumajuu were sealed to the Erurei Box. Dereputa's meteor shower inadvertantly opened the Erurei Box, freeing the Yuumajuu. The name Yuumajuu comes from the Japanese term for cryptids much like UFO, which is UMA (Unidentified Mysterious Animal).
|Makuin of the Blob
Height: 170 cm to 42.5 m
Weight: 186 kg to 465 tons
Makuin of the Blob is the leader of the Yuumajuu, wishing to reform the world in his image for his kind to flourish in. He can use his Dorodorod cane to perform spells and manipulate his body. He can convert himself into the Yuuma Buster for Kinggon to use in their Yuuma Dynamic attack and says "Shimmering Yuumatick Power!". While starting phase one of their final plan, Makuin is appearantly destroyed by Ground Gosei Great. However, Makuin intends for his apparent demise to absorb the full brunt of Super Gosei Power before his remains are transferred into the Erurei Box to regenerate and create the Yuuma Hole to destroy the Earth. After the box is enlarged and placed on top of the Tokyo Metropolitan Government Building, Makuin begins the final phase of their plan: absorbing the entire Earth. But the Goseigers travel inside and after overcoming his illusions they reach his core in the Yuuma Hole, destroying him forever. He is named after The Blob, which in Japanese was known as Makkuin no Zettai no Kiki.
|Kinggon of the Bigfoot
Height: 219 cm to 54.8 m
Weight: 240 kg to 600 tons
Kinggon of the Bigfoot is the military leader of the Yuumajuu and one of their strongest warriors, armed with a kanabo. He tends to say certain words three times in a sentence. Though he and Makuin are a powerful pair, Kinggon unintentionally falls into the spell of his friend Jogon by Buredoran, nearly getting himself killed by the Goseigers when he attempts to prove his superior strength to what he believed was Makuin. However, Kinggon realized he was deceived and managed to find the hive holding the Bibi Bugs before returning to get rid of Buredoran. Kinggon aids Makuin in their final plan until his partner is killed off and he himself is destroyed by Gosei Ultimate soon after. Kinggon is named after King Kong.
|Buredoran of the Chupacabra
Height: 191 cm
Weight: 167 kg
Buredoran of the Comet survives the destruction of Warstar and is revealed to have been a Yuumajuu member the whole time he was with Warstar. Within the Yuumajuu, he is known as Buredoran of the Chupacabra. He still has control over the Bibi Bugs and Bug Soldiers Bibi. Sensing the Abare Headder, Buredoran attempts to take it as his weapon by acting without the others. However, Gosei Red manages to reach the Headder and convert it into the Miracle Dragon Headder, resulting in Buredoran's first defeat by the Goseigers as Makuin and Kinggon imprison him for his recklessness. Though eventually released, Buredoran proceeds to turn Kinggon against Makuin and take his place as Makuin's right-hand man in order to remove him from power. However, this scheme backfires and Buredoran is eventually defeated by Ground GoseiGreat. Chupacabras is Spanish for Goat Sucker, a legendary ryptid known for sucking blood from cows or goats.
|Demon Bug Soldiers Bibi
Height: 200 cm to 50 m
Weight: 219 kg to 547.5 tons
Neon green insect footsoliders, they wield one twisted blade each. They are given life through the Bibi Bugs. They are also used by the Yuumajuu.