Reborninundertale Stories

What if someone from our world was reborn as grillby as the original grillby? What if everything now happens more differently because grillby is now going to be more different? (Everything starts differently, gaster is still there cause grillby saved him, differently beginning, different middles, different ending, everything is different, personality included, I'll add more if i think of anything and grillby is going to be op and you won't change my blind anytime soon. Slow updates etc I'm thinking on what to do with this story because I don't think I read a story about becoming grillby before. If there is any, I would like to read them.

What if..someone from our world died and became a creator that was everywhere and nowhere at the same time? What if that someone..became dust sans friend before he joined nightmares gang? What if this is a forced god of destruction but quite different? (Different things happening, different starts, different ending, maybe different personalities im not good with those etc