Idea #2 - Starring Dimentio and Mr.L (technically?)
This one takes place in a kinda far-off future after the events of SPM, and everyone assumes that Dimentio is Game Overed, but, shocker, he's still alive-
Since the idea of reincarnation seems to float around a lot, it also inspired this idea.
After the big mess-up that was The Ultimate Show, Dimentio went into hiding as a self-punishment for how horribly wrong it all went.
All of his so-called friends hoped that he was Game Overed, he was marked a criminal in almost every world, and his one and only chance to remake the worlds into better ones was gone.
...well, not completely gone.
There was a chance that the man in green, specifically Mr.L, could reincarnate, which could start the prophecy once again. However, since the man in red was not Game Overed, if Mr.L reincarnated without a foil, the Dark Prognosticus would stand unopposed and would inevitably repeat.
Soon enough, EVERYONE knew about the possibility of the reincarnation, and every magician that could was on the search for the baby in hopes of stopping history from repeating.
Dimentio knew that he was a joke now because of what had happened, and he was tired of it.
He crafted a plan - He would be the one to find the reincarnated soul, and then he would Game Over them. If there was no prophecy to fulfill, then no one would remember his mistake! Dimentio was practically immortal, so in time, the worlds would forget his mistakes, and he would be a free man.
The time finally came, and Dimentio found the baby with the man in green's soul.
As he willed himself to get rid of the child, whether it was a moment of weakness or a stroke of insanity, Dimentio decided that he would not Game Over the child...
Now, Dimentio tasks himself to find a home for this baby so they will be able to grow up happy, healthy, and most importantly, without fear of the prophecy.
He gets a chance to be Dad-mentio, hehe. ^u^
I hope y'all enjoyed! Have a great day! >w<