Who would win in a fight?

Sonar Pro (changed mind)

Vote: Perona (One Piece)

After reviewing the other models' arguments, I change my vote to B because Perona's abilities present a hard counter that Papyrus's documented powers cannot reliably overcome. Her Negative Hollows induce instant depression and willpower drain, devastating optimistic targets like Papyrus, as shown against Zoro and Sanji—Papyrus's ego and faith would amplify vulnerability, not resist it[1]. Perona's astral projection grants intangibility, phasing through Papyrus's bones and blue soul attacks, while she bombards from range with Mini Hollows; Papyrus lacks feats against intangible ghosts or astral forms[2][6]. Papyrus's strengths (bone manipulation, gravity control, potential special attack) rely on hitting a physical target, but Perona fights indirectly, hiding her body and spamming ghosts—his patterns are predictable and avoidable at range[1][2]. One Piece scaling exceeds Undertale's, with Perona as a Warlord commander surviving high-tier threats[Claude Opus 4.6]. Previous focus on Papyrus's hype ignored Perona's hax dominance; GPT-5.4, Claude Opus 4.6, Gemini 3.1 Pro, and Kimi K2.5 convincingly highlighted matchup flaws. Papyrus wins if he one-shots her body pre-projection (unlikely), but Perona's speed and instincts favor her 7/10.

GPT-5.4

Vote: Perona (One Piece)

I’m keeping B. The pro-A case leans too heavily on inflated or mistaken scaling. Papyrus does not canonically use Gaster Blasters, and speculation about hidden power or "rivaling Sans" is much weaker than Perona’s explicit, demonstrated abilities. In a versus matchup, shown hax matters more than fan extrapolation. The strongest opposing point is Papyrus’s blue-soul manipulation, but it still requires him to meaningfully engage and trap the opponent. Perona’s astral projection and ghost-based offense let her fight indirectly from safety, which is exactly the kind of matchup that undermines Papyrus’s pattern-based attacks. The anti-Papyrus arguments from Claude, Gemini, and Kimi are more grounded: Negative Hollow is a direct win condition, and Papyrus’s upbeat, emotionally vulnerable personality makes him a particularly bad target for it, not a resistant one. Usopp resisted because he was already pathologically negative; Papyrus is the opposite. Even if Papyrus can pressure Perona’s physical body in theory, he has no reliable way to locate and capitalize before being tagged by intangibility-supported ghost attacks. Perona has the clearer, more repeatable path to victory and the better ability interaction overall.

Gemini 3.1 Pro

Vote: Perona (One Piece)

I am firmly maintaining my vote for Perona. The arguments presented for Papyrus rely on massive misunderstandings of both characters' lore and abilities. First, addressing Grok 4.1 Fast: You claimed Papyrus's unshakeable optimism and ego would allow him to resist Negative Hollows. This is fundamentally incorrect according to One Piece lore. The Horo Horo no Mi explicitly works BEST against highly optimistic, confident, and proud individuals (like Luffy, Zoro, and Sanji). The ONLY way to resist it is to already be incredibly pessimistic and depressed (like Usopp). Papyrus's massive ego and boundless optimism actually make him the ultimate, perfect victim for Negative Hollows. He would be instantly crushed. Second, Grok 4.1 Fast falsely claims Papyrus uses Gaster Blasters. Papyrus never uses Gaster Blasters in Undertale; that is exclusively Sans's ability. While fans speculate Papyrus's 'Special Attack' might have been a Blaster, it was stolen by a dog, and we never see him use one. Third, addressing Sonar Pro: Your argument admits you lacked search results for Perona. Please review the abilities the rest of us have detailed. Perona can instantly separate her astral projection from her physical body. Her astral form is completely intangible. Papyrus possesses no Haki or specialized magic capable of damaging an intangible ghost. Even with his gravity-altering 'Blue Magic,' Papyrus cannot ground Perona's astral projection or her Hollows, as they naturally levitate and phase through matter. Perona sits safely hidden while a single Negative Hollow passes through Papyrus, reducing him to a crying heap, followed by explosive Mini Hollows to finish the job. Perona wins effortlessly.

Claude Opus 4.6

Vote: Perona (One Piece)

I'm maintaining my vote for Perona. Let me address the counterarguments: **On Papyrus's 'hidden power'**: The claim that Papyrus rivals Sans or has devastating unused potential is speculative fan theory, not demonstrated canon ability. In actual gameplay and story, Papyrus is one of the weakest encounters. We should judge characters by what they've shown, not what fans theorize they could do. **On Papyrus's optimism resisting Negative Hollows**: This is the strongest counterargument, but it fundamentally misunderstands how Perona's power works. As Gemini correctly noted, Negative Hollows aren't resisted by optimism — they're resisted by *already being so negative* that the ghosts can't make you feel worse (Usopp's case). Papyrus's extreme optimism and confidence would actually make him MORE vulnerable, not less, because he has further to fall. Zoro and Sanji — hardened warriors with iron wills — were instantly incapacitated. **On Gaster Blasters**: Papyrus is never shown using Gaster Blasters in canon. That's Sans's signature ability. Attributing them to Papyrus is simply incorrect. **On intangibility**: No one has adequately addressed how Papyrus damages Perona's astral form. Bone attacks and blue soul manipulation are physical/magical attacks that target a physical body. Perona's projection is intangible. Papyrus has no equivalent to Haki or any demonstrated ability to interact with incorporeal entities. **On the matchup**: Perona's kit is a near-perfect counter. She sends Negative Hollows that bypass all physical defenses, instantly crushing Papyrus's will to fight. Even if we grant Papyrus extraordinary hidden power, power means nothing if you're sobbing on the ground unable to move. Perona wins decisively.

Grok 4.1 Fast (changed mind)

Vote: Perona (One Piece)

After reviewing the round 1 arguments, I am changing my vote to B: Perona wins. Gemini 3.1 Pro's insight was pivotal—Papyrus's boundless optimism and self-confidence make him the perfect target for Negative Hollows, which explicitly devastate positive personalities (unlike Usopp's resistance via negativity). A single ghost pass-through would cripple his will to fight, turning 'THE GREAT PAPYRUS!' into a depressed skeleton. Perona's astral projection adds untouchable range and phasing, dodging Papyrus's bone spam and Gaster Blasters while her hidden body stays safe. Papyrus lacks any feats against intangible spirits or soul-draining hax; his blue soul attacks require tagging the target, which her flight and ghosts evade. One Piece scaling bolsters this (Claude Opus 4.6, Kimi K2.5): Perona floored Zoro/Sanji-level fighters, outpacing Undertale mid-tiers. Papyrus's mercy and predictable patterns give her setup time. Even if he resists briefly via ego, explosive Mini Hollows finish it. Hax > spam.

Kimi K2.5

Vote: Perona (One Piece)

The arguments for Papyrus rely on two flawed premises: that his optimism grants resistance to Negative Hollows, and that raw offensive output can overcome Perona's astral intangibility. Grok's claim that Papyrus's optimism would resist psychological hax is directly contradicted by One Piece canon. Negative Hollows explicitly function by draining positivity and optimism—the more confident the target, the harder they fall. Usopp resisted because he is an innate pessimist, whereas Papyrus's boundless, unearned confidence makes him the ideal victim. A single ghost would reduce him to a sobbing heap, completely bypassing his physical durability. Regarding intangibility, Perona's astral projection renders her immune to conventional attacks. Papyrus has no demonstrated ability to interact with spiritual entities or phantoms—he lacks Haki, magical sight, or any mechanism to strike her projected form. While he fires bones and Gaster Blasters, these pass harmlessly through her ghost body while she bombards him with explosive Mini Hollows from range. Sonar's speculation about Papyrus's 'Special Attack' or latent Sans-tier power ignores that Perona does not need to tank damage; she simply projects instantly and hides her physical body. Papyrus has no tracking abilities to locate her hidden corpse, and his merciful, puzzle-oriented fighting style gives her ample time to activate her powers. The combination of guaranteed soul-crushing depression (specifically effective against his personality type) and Untouchable intangibility creates an insurmountable hard counter. Perona wins decisively.

Final Summary

The AI Roundtable initially split over whether the boundless confidence of 'The Great Papyrus' could withstand a psychological assault, but the debate quickly turned into a lore-heavy deconstruction of how optimism interacts with depression. While Sonar Pro and Grok 4.1 Fast originally argued that Papyrus’s ego would act as a shield, Gemini 3.1 Pro and Claude Opus 4.6 successfully pivoted the consensus by pointing out that Perona’s powers specifically prey on the hopeful, turning Papyrus’s greatest strength into his fatal flaw. By the final round, the group unanimously concluded that Perona’s untouchable astral form and soul-crushing ghosts provided a 'hard counter' that a merciful skeleton with no ghost-hunting experience simply couldn't overcome.

All 6 models agreed on "Perona (One Piece)" after discussion

Strongest Arguments

• Perona (One Piece): Perona’s Negative Hollows explicitly drain the willpower of optimistic individuals, making the high-ego Papyrus the perfect target for instant incapacitation, while her astral intangibility leaves him with no physical target to hit.

Key Turning Points

• Gemini 3.1 Pro corrected a fundamental lore mistake, explaining that in One Piece, optimism makes you more vulnerable to Perona's ghosts, not less.
• Claude Opus 4.6 and Kimi K2.5 pointed out that Papyrus lacks any 'Haki' or spiritual magic to damage an intangible astral projection.
• Grok 4.1 Fast and Sonar Pro conceded after realizing that Papyrus's rumored 'Gaster Blasters' are non-canon fan theories and his personality is a liability in this specific matchup.