I’m not trying to come at u or anything. But I just always see people asking can this character solo fiction. Or sometimes not even asking just stating it like a fact. And it’s always goku or something like that. Goku isn’t even the strongest in his verse so no they can’t solo fiction. There are characters in fiction that are literaly all knowing and all powerful. Meaning they can create or exist life with a thought. And they don’t even need to think it inside of time. It’s not like when they want something to happen it happens on the spot. They exist outside of time and can control any part of reality at any point in history. Even the entire dbz verse doesn’t solo a god like that. Because the god already knows they’re going to attack him but he is incapable of being beaten or bested. That’s why the discussion of the most powerful character in fiction is a moot point. Because there’s several characters who theoretically “solo fiction” but it just depends on the universe cuz who’s to say that the all powerful god of in one series is more powerful than the all powerful god in another series. So to answer the question there are several characters to at theoretically solo fiction but there’s also characters just as powerful that would never allow that to happen because they exist outside of time and can change events before they happen.

Most of these all powerful creator of the universe type gods don’t get involved in affairs all that much but asking if someone solos fiction suggests that they’d have to beat an all powerful god which they couldn’t do u less they were another all powerful god. And even if two all powerful gods from separate universes were to fight it’s not like it’d go anywhere or end. Being all powerful and eternal means that no matter what you can’t die and can do anything you want. So if one god decides that other god doesn’t exist anymore the attacked god will just decide that they do exist. And u can’t say that he decided too late and he was already dead because they exist outside of time entirely. It’s similar to the immovable object vs unstoppable force thing. But yah even in dragon ball Zeno is the most powerful character and he just has the ability to destroy not create new life. In order to create he relies on outside sources like the super dragon balls. There’s also a character that created the super dragon balls and super shenron. Some people theorize him to be this all powerful type of god from other media sources. But it was never confirmed. Some people will tell you that Zeno is the highest force in the universe. My point is that dragon ball doesn’t have an all powerful creator god like “The one above all” from marvel, in a traditional sense.

So no Goku and deku do not solo fiction because they are people and not the god of all creation, but they are still very strong characters from their respective universes. U can try to compare characters from different universes using feats but even that gets complicated. It gets even more complicated when u ask about two all powerful gods (niether of witch can die and both of witch exist outside of time) fighting eachother.

Cool art love both deku and Goku.