|Gentenju Sentai Monsteger|
|Led by:||Xenosa (true leader/mastermind)|
Samuel Nakaoka the Second (leader, defected)
|Generals and other Notable Members:||Brajira of the Messiah (defected)|
|Monster Types:||Monsters in the Past|
|Coexisted with:||Time Jackers|
Quartzer is the final antagonistic organization led by Samuel Nakaoka the Second who pretends to be the protagonist, unawaring about Xenosa's master plan by Brajira. Samuel Nakaoka's plot is to merge all worlds with himself to become the true BEAST God.
Because of both Brajira and Tsukasa explains about the horrible incidents of Swartz's plan, Shem-Ha's resurrection, Noble Reds' massacre, and Ai's rebels are masterminded by Samuel Nakaoka the Second, Samuel Nakaoka send the Quartzer members to attack Brajira and Tsukasa for revealing his plot.
Samuel Nakaoka tries to kill his granddaughter Aiji for talking about his true friendship, but Tsukasa protected her. Tsukasa asked her that he wants to fight him alone which she accepted. Tsukasa angrily asked Samuel Nakaoka why did he doing this and chastise him for using Swartz, Lightning, Shem-Ha, Vanessa and her allies and Ai as his tools.