To get an idea of what the outcome would be, we need to review this character's feats and abilities.
This is the fusion of Frieza, Cell, and Majin Buu, created to get revenge on Goku in Dragon Ball AF. However, his power level is so exaggerated that it took Super Saiyan 10 to defeat him. The version we're using is even more extreme, as this Cellbuuzer is not an ordinary version of the AF story, as it is an avatar assimilated with the end, an entity that represents the absolute end of everything, a being not bound to any story or narrative, since concepts like space, time, omnipotence... are less than fallacies to it (basically insignificant compared to It's existence). And to give you an idea, it is so powerful that it is above higher narratives and the bubbles of reality (which, given the statements, implies that one of these is our real world). It doesn't run, but rather ignores the concept of speed, being virtually omnipresent in every part of creation. Cellbuuzer, with its mere presence, can collapse not only the universe but the past, present, and future of the entire multiverse with the lift of a single finger.
He can obviously manipulate the narrative, easily defeating beings whose power transcends itself infinitely, such as Goku and Vegeta in their Mystic Super Saiyan 4 forms (including the latter in their Mystic Super Saiyan 5 forms, allowing them to continuously transcend infinite power levels at any given moment, as well as transcending and manipulating concepts like space, time, and speed effortlessly), possessing omnipotence within the range of his cosmology. Among these beings who transcend infinitely is the omnipotent construct of Gogetto in Mystic Super Saiyan 5, a fusion of Mystic Goku 5 with the Celestial Core and Mystic Vegeta 5 with the power of the Evil Dragon Balls. Essentially, it's a quadruple fusion, similar to assimilating Princeland and Vegeta assimilating Tengu, resulting in one of the most overpowered fusions ever seen. It can transcend its power infinitely with every Micra of an instant, rendering its own power insignificant at any given moment during combat. Furthermore, it is omnipotent, omniscient, and omnipresent throughout the entire dimensional multiverse, which is composed of countless macroverses as timelines and alternate realities.
And if that weren't enough, it has the ability to create countless versions of itself with the same power as the original consciousness, and each copy can transcend its power infinitely, giving even the primordial beings (Infinite SSJ and SSJ 20000) a run for their money. He can manipulate the axioms of all creation and existence itself. This would place him above beings subject to these axioms, such as Goku in Super Saiyan Mystic 5 with the Celestial Core, Lucifer Morningstar, or the Living Tribunal, etc. Axioms are fundamental premises assumed to be true and self-evident, such as "existence exists" or "something cannot be and not be at the same time." Each one is the unproven foundation upon which a system is built. Manipulating them implies destroying the consistency of that entire system. If this fundamental axiom of "existence exists" is manipulated (attempting to make existence not exist), its very origin is invalidated, and it collapses until nothing remains.
A mere particle of his ki can pulverize the cosmological creation of Dragon Ball Super, composed of 12 macrocosms/universes, 2 realms outside of them, and branching timelines, having done so many times. While in the World of Charisma, he easily defeated Fu, Broly, and the fusion of Gogeta Xeno and CC Vegito from Dragon Ball Heroes, proving superior to beings that affect an infinite multiverse and realms that transcend it. He treated Goku Xeno Arcade like a toy, even though simply transforming into a Super Saiyan collapse all of history within the Dragon Ball Heroes cosmology.
He ignores narrative constructs to the point of erasing the avatars of the writers of Dragon Ball Multiverse. And in his fight against Goku Atlas, they transcended the concepts of space, time, speed, and narrative, accessing higher planes of reality, transcending infinite narrative layers, and more. Finally, Cellbuuzer knows that there are viewers who compare him to ordinary versions of himself, being aware that he is an avatar of the end itself, and he also states that his power transcends the capacity of viewers as human beings, that is, he transcends the very basis of existence, and this is speaking of Cellbuuzer as an avatar of the end.
Source from the character in question: https://youtube.com/playlist?list=PLazcaejlKSKE24hvF0nZvV0VOGoLdq-Gv