Margodon

The last of the negative energy spawned by mankind tried to assault humanity one last time by forming the monster Margodon. Once Margodon came to Tokyo, the mammoth-like monster used his icy mist to cover a large portion of the city in ice. As UGM was about to head out the crew told Takeshi and Ryoko that they knew their secret identities of Ultraman 80 and Ultrawoman Yullian. With this in mind, UGM wished to destroy Margodon themselves without the assistance of Ultras. Takeshi and Ryoko respected their decision and allowed UGM to attack Margodon using a special freezing weapon. Once Margodon was shattered with a giant wrecking ball on one of UGM's fighters, Takeshi and Ryoko enjoyed their last day on Earth before turning back into 80 and Yullian and going home to Nebula M78, giving the Earth twenty five years of peace until Ultraman Mebius's time.