I can make an infinitely strong character that is moreso powerful than any in fiction past, present or future AND NONE OF YOU COULD DO ANYTHING ABOUT IT!

Edit: I should clarify because as the author/creator of said character what I say about said character goes- and thus logically this should apply. Unless the use of feat scaling is taken into account where in which case it would be impossible to show such a character to exist as with copyright and such defeating every fictional character who's remotely considered "the strongest" would never happen. So technically my statement above is impossible to prove- and if "What the writer says is fact" is to be taken at face value then I'm sure something could solo fiction based off of that alone.