Ultraman: Because I am Gatanothor

When Feng Du transmigrated to Ultraman Tiga's world, he refused, but unexpectedly, he had a cheat ability. Since he couldn't go back, he might as well use this cheat ability to do something...
For example, what if we merged with and assimilated the evil god Gatanothor?
Years later, Fengdu travels to another world with his brother-in-law. Seeing his brother-in-law, now transformed into Ultraman Tiga, being beaten to a pulp, he angrily shouts: "I'll only help you this once! Go, Zoga, destroy them..."