Who made him Ultraman?

"You ask me what is Ultraman?"
"Ultraman is someone who fights for your happiness." Yu Chen said.
"But you overthrew the rule of Planet Ganon and destroyed the kingdom!" The reporter looked dissatisfied.
"Disregarding the lives of ordinary people and wantonly invading other civilizations, this is no longer an ordinary civilization. We must strike hard!" Yu Chen was very angry.
"Any evil existence that poses a threat should be smashed to pieces with a stylish iron fist!"
……
Delacion: "The direction of so many worlds has changed. As an Ultraman, you shouldn't interfere too much."
Yu Chen: "If I don't intervene after he becomes Ultraman, then it would be in vain."
Making the imperfect perfect and the impossible possible, this is Ultraman.
……
Dracion didn't understand why this Ultraman was so eccentric.