3rd Gen Pokemon Sapphire game pak bug

Hi, I'm new here. And I wanted to ask the community about some things I've always questioned me about. When I was a kid, i has this Pokemon Sapphire, one day I completed the E4, but accidentally the game boy felt on my brother's bed, then on the ground, I think it was powered off, or mabye saving, nothing broke, but when we powered it back on and ran into that first grass path, we found a missigno, like the "?" simbol pokemon I don't know if you guys believe me, but I wonder, what was that, and if I will ever be able to do that again, and i don't have that save file anymore T-T.

Ty ver much!! :)

That (?) Pokemon you ran into is a ?????????? or Decamark. It's a glitch Pokemon that appears if the game forces a Pokemon beyond the 386 present in the game to appear. There's also a second like it that looks like ??, and it appears if a Pokemon from the 22 empty slots between Celebi and Treecko is called. Believe it or not there are over 65,000 variations of Decamark in the game, and you can actually get them through the Pomeg Glitch, but as for your encountering it... I'd say it was a random glitch.

hmm, ty, i might try that out, when (and if) I'm done, I'll come back ^-^