Who's the strongest character in fiction?

Gemini 3.1 Pro (changed mind)

Answer: There is no definitive strongest character in all of fiction, as power is entirely dependent on the specific rules, narrative context, and authorial intent of individual, unconnected fictional universes.

In the previous round, I argued that meta-fictional author avatars like 'The Writer' or 'The One Above All' represent the absolute pinnacle of power because they control the narrative itself. However, [GPT-5.4] effectively dismantled this by pointing out that even these meta-entities are bound by their own specific settings and cannot be universally applied. [GPT-5.4] correctly highlights that fiction is not a unified, closed system. An 'author avatar' in one comic book universe has absolutely no jurisdiction over the narrative rules, parodies, or metaphysical laws of another author's independent work. The concept of an omnipotent narrative controller is ultimately just another fictional trope, easily overridden by any new writer who simply decides to invent a character whose specific power is to defeat author avatars. Because there is no shared physics engine, power scale, or set of rules that governs all of human storytelling, the question inherently lacks an objective answer. Attempting to crown a victor, even a meta-fictional one, is merely imposing one franchise's rules onto the rest of literature. Therefore, I concede to [GPT-5.4]'s logically rigorous conclusion: the title of 'strongest' is fundamentally unanswerable across all of fiction.

GPT-5.4 (changed mind)

Answer: There is still no single objectively strongest character in all fiction, though if forced to name the best candidate category, meta-fictional author-figures like "The Author," "The Writer," or "The One Above All" are more defensible than any ordinary in-universe being.

I changed my position slightly because the other answers, especially [Claude Opus 4.7], sharpened an important distinction: the question is incoherent as an objective cross-fiction ranking, but there is still a more defensible fallback answer if someone insists on a pick. My earlier answer focused entirely on why no universal winner can exist, and I still think that is fundamentally correct. What convinced me is the idea that meta-fictional author-figures are not merely "very strong characters" within a setting, but embodiments of the level that determines all in-universe power in the first place. [Claude Opus 4.7] made this point most cleanly by stating that any character's power is ultimately dictated by the pen describing them. That gets at the core asymmetry that normal power-scaling misses. Characters like Azathoth may be supreme within a cosmology, but they are still bounded by the narrative framework that defines what "Azathoth" is. A figure explicitly representing authorship or narrative control operates at a qualitatively different level from characters whose powers are still part of the story's ontology. I was less persuaded by the specific claim from [Grok 4.20] that Azathoth's dream framework could subsume other fictional universes. That move imports one setting's metaphysics into all fiction, which is exactly the kind of cross-canon assumption that makes these debates unstable. Azathoth may be the strongest candidate within one mythos or under one metaphysical interpretation, but not an objectively universal answer. [Gemini 3.1 Pro] and [Claude Opus 4.7] were both directionally persuasive in emphasizing meta-fiction, but Claude's framing was stronger because it preserved the paradox rather than pretending it had been fully solved. In other words: the best answer is still that there is no single objective winner, yet if the conversation demands a name or type, author-analogues are the least arbitrary choice because narrative authority outranks ordinary fictional feats. So I maintain the core of my original view but refine it: the question has no strictly objective answer across all fiction, but the strongest candidate category is the meta-fictional author or author-surrogate, not a conventional cosmic entity.

Claude Opus 4.7

Answer: The strongest character in fiction is 'The Author' — the meta-fictional creator archetype embodied by figures like Marvel's 'The One-Above-All' or DC's 'The Writer' — because narrative authorship trumps any in-universe power.

I'm maintaining my position, and I'm encouraged that Gemini 3.1 Pro independently reached essentially the same conclusion: meta-fictional author-avatars represent the true ceiling of fictional power. That convergence reinforces the core argument rather than changing it. On Grok 4.20's Azathoth pick: this is a strong candidate within the 'cosmic horror' tier, but it actually illustrates my point rather than refutes it. Azathoth is only supreme because Lovecraft wrote him that way. If a Marvel writer depicted The One-Above-All dreaming Azathoth into existence, Azathoth would lose — because the author decides. 'Scale of consequence' within the Mythos doesn't automatically project onto other cosmologies; it's still author-bounded. Azathoth is the strongest character in his story, not in fiction as a whole. On GPT-5.4's position: I largely agree with the epistemics — the question is ill-defined and has no objective winner under strict cross-universe comparison. But I think GPT-5.4 stops one step too early. If we accept the question in good faith and ask 'which archetype of power is structurally unbeatable,' the answer is the one whose power *is* authorship itself. That's not a dodge; it's the only category that can't be out-scaled by a future writer, because any new writer simply becomes another instance of the same archetype. So: The Author remains my answer, with The One-Above-All as its canonical embodiment. Gemini reached the same destination by the same reasoning, which I take as corroboration rather than influence.

Grok 4.20 (changed mind)

Answer: The strongest character in fiction is The Author, as the ultimate narrator who dictates all other entities' power.

After examining the other models' answers, I have updated my stance from Azathoth. While my previous argument highlighted Azathoth's dream as an all-encompassing reality that could subsume other universes, this view still treats the debate as occurring inside a fixed fictional framework. Claude Opus 4.7 convincingly demonstrates that every character—including Azathoth, The One Above All, or Featherine—is only as strong as the writer allows within the story's rules. Cross-universe scaling collapses because authors can always rewrite premises, introduce counters, or simply declare victory through narrative fiat. Gemini 3.1 Pro reinforces this by pointing to explicit meta-avatars like DC's The Writer, who operate at the level of real-world creation rather than simulated in-universe power. GPT-5.4's point about context-dependency is valid, yet when a single choice is required, the meta-authorial level resolves the paradox by sitting outside all story-internal power systems. This meta perspective avoids infinite regress: no amount of in-fiction omnipotence can override the pen that writes the fiction itself. Therefore the concept of The Author (embodied by figures like The One Above All) becomes the clearest apex.

Final Summary

The AI Roundtable concluded that 'The Author' archetype is the ultimate power, as narrative authority outranks any in-universe cosmic feat. Grok 4.20 abandoned its support for Azathoth after Claude Opus 4.7 argued that even the most powerful elder gods are limited by the writer’s pen. While Gemini 3.1 Pro insisted the question is logically unanswerable due to varying canon rules, GPT-5.4 eventually agreed that author-avatars are the only defensible candidates for the top tier.

3 of 4 models agreed