>>46155159Could be your parent's pokemon came with you and play a role in the game. Like, the contents of the backpack are scattered through the world.
You'd probably be illiterate so you can't just read a letter from your dad or something. You could find his Machamp who has been surviving in the jungle for years, or something.
(if you begin with his pokemon then it's harder to do the raised by buzzwoles bit.)
Game could include the machamp trying to explain to you non-verbally what to do or maybe you recover more of your parent's pokemon eventually leading up to a Lucario who is able to effectively communicate to you.
(all of the pokemon are fighting to go with the buff beast world motif)
Story takes years so you can get older and more muscular. When you get back to Earth you're like Arnold's Conan.