John is noticeably larger when he's 16 than when when he was 13. (We can see when he retcons.) So are the godtiered kids going to die of old age? Or perhaps they will age until they're adults, then stop?

His change in height can probably be more attributed to the changes in Hussie’s artstyle over the years but it’s likely the god tier kids will age until they finish growing (early to mid-20s) then stop, but that’s not based in canon at all so don’t quote me on it