If pre-Roshi Goku fought the RRA, hed die. Recognizing that isnt headcanon. So obviously, that is something that cant happen.
In the actual story, Bulma drags him on an Adventure.
If that doesnt happen, then either Pilaf steals the ball and Goku remains at the mountain or Pilaf recruits Goku. You think the 2nd happens, I think the first would.
I want a pet Lavos Spawn.
[Order of the Cetaceans: Phocoena dioptrica]