I'd like this to be a positive thread instead of talking about bad OP characters.

For instance, there's SCP-3812, who is one of the most unique characters of all time and is as much a natural process as an entity. I headcanon that there are some SCP universe anomalies, especially in the Chinese and German branches, who are stronger, though.

And there are the insanely strong Homestuck characters. Homestuck's world is basically made up of emanations of abstract concepts called Aspects. These Aspects encompass hierarchies within hierarchies, and the gods of Homestuck have some control over one each. Jade should be the second-strongest on her own because Space is comparable to the insanely broken Hope, even though it's weaker. John with the Treasure should be the strongest because he can manipulate canon itself, and Lord English should be comparable to him (he's buffed by many, many things). But just because something is transfinite or beyond infinity doesn't mean it's omnipotent or even comparable to another universe doing the same thing, since the meaning can drastically differ. That's what I learned in VS debating. Things get confusing and rough out there.