Due to their connection with the hero, they were the only ones who are not affected by the changes made when one of Akane's Kaiju killed a victim, causing them to be erased from existence.
In the last episode, however, they choose to be absorbed into Gagula to increase his power for his battle with Kaizer Gridknight, existing within it in a very similar way to how the pilots appear within Dynazenon.
Mad Origin (マッドオリジン, Maddo Orijin) is the main antagonist of Gridman Universe and is referred by Alexis as a Cluster of Kaiju origins (怪獣発生源の集合体, Kaijū hassei-gen no shūgō-tai), an intelligent Kaiju that embodies the worst of humanity and can speak human language through a monster generator built into his chest.
Mad Origin interferes from outside Yuta's universe as part of his plan to cause a Big Crunch, seeking to plunge all reality into primordial chaos.
However, Akane’s return forces Mad Origin to personally battle the protagonists, able to fully counter Gridman and Gridknight’s attacks.
The Poison Gas Monsters that surround Tsutsujidai repair any damage done to the city following a Kaiju attack while altering peoples' memories of any casualties.