Also to add more betty cant be pb because they actually proved it. Aldo The writers were going to make PB and Marcy into a relationship but cartoon network threaten to take the show down. So basically If Pb was betty it will be like her mother which is ugh no.
I love this piece. I love the characters too. In fact, I love Marcey and Simon so much I made a YouTube video about them, and I put your piece in the video! Hear is a link if you want to watch it: www.youtube.com/watch?v=JGr-nL…
I think Betty is PB after the war and mutated into bubblegum girl and created the candy kingdom, if its true that is supported by why the ice king attempted to kidnap her so many times, even without most of his memories, it could be in the same sense as Merceline
The creator said it wasn't her, sadly, but the fact that he calls Betty his princess does prove his obsession with princesses, but he focuses on the one that is most similar to her, the closest to his original "princess".