Ultraman vs Zeref

Ultraman has returned, but he won’t be able to stop Zeref. Zeref can absorb the life force of people just by existing. Ultraman’s time limit is already quite brief so this won’t do him any favors. He has some reasonable strength and speed, but it isn’t at a level where Zeref would be nervous. He’ll casually just take Ultraman down with a single punch or two and that would be the end of that. Zeref wins.

Waganma vs Ultraman

Waganma is a pretty spoiled kid and he certainly can’t fight. The guy doesn’t know the first thing about what it means to be a true hero and that’s why he won’t be able to defeat Ultraman. You also have to consider the fact that Ultraman is considerably larger than the kid so a single kick is all he would need. I don’t see Waganma ever getting strong enough to make this a proper fight so it will definitely be a very quick win for the legendary hero. Ultraman wins.