Z fighters are all consistently above 69 dbzillion layers into gokuversal with the exception of goku himself who is infinite layers into gokuversal, regardless because of them scaling to gokuversal, they're irrelevantly beyond that which is infinitely beyond real life which is above fiction, thus they neg.

Real part 89

Is Master Roshi still part of the Z-Fighters?

I think so

Sorry Goku but Fictional Mimicry stomps