
Hazbin Hotel quickly earned its place as a cornerstone of adult animation when it debuted in January 2024. Between her work on Helluva Boss and Hazbin Hotel, Creator Vivienne Medrano has crafted a sprawling vision of Hell—known as “the Hellaverse”—filled with Overlords, Hellborn royalty, and mysterious deals, leaving fans with endless questions about the history and power players within the Nine Circles of Hell. With the fate of Charlie’s hotel and Vox’s smear campaign against Heaven to grab power still unknown, we have just as many questions and theories at the tail end of Season 2 as we did when the first season concluded. Among them is someone introduced last season: Rosie, the charming and accommodating Overlord of Cannibal Town. Her friendliness—a rarity in Hell—coupled with the revelation that she is the demon who owns Alastor’s soul, has made her a prime target for questioning.
Brilliant theories are taking social media by storm, suggesting that fans might have collectively solved the mystery of Rosie’s true identity as someone, or something, way more powerful than previously thought.
Rosie’s Untold Power Suggests She is Someone of Biblical Proportion

The most popular cluster of theories places Rosie far outside the established hierarchy of damned souls, suggesting she is an ancient figure whose identity ties directly into Judeo-Christian lore from which Medrano tends to draw. The idea is simple: her level of influence, her specific domain (Cannibal Town is unique even among Overlords and Seven Deadly Sins), and her unflappable confidence point to an origin dating back well before the 20th century.
This theory suggests that Rosie is Eve, the first woman from the Garden of Eden. The logic here is too hard (and tantalizing) to ignore: if Adam was an Exterminator, and Lilith is Lucifer’s estranged wife, then Eve is the last piece of the original human puzzle. As the first sinner who ate from the Tree of Knowledge, Eve would logically have her unique power in Hell, separate from the Sinners who were damned much later in the same way Lilith and Adam have their own special roles in the afterlife. Rosie’s distinctly vintage look aligns with a character who has been around since the very beginning, watching history unfold.
A variation on this theme suggests she is actually a long-awaited and confirmed villain, Roo. With Medrano officially posting on social media that the actor for Roo has not only been cast, but recorded lines already, this is a theory that has legs and ties back to the deep lore of the show itself. If Rosie is someone with power strong enough to reach the human world—a feat that even Lucifer hasn’t been shown to do since he was damned to Hell—it is very plausible that she is the original “Root of All Evil” or simply. Roo.
The most intriguing biblical theory, however, is that she is a fallen angel. This would immediately explain her power, which rivals or even surpasses some of the stronger Overlords and Seven Sins seen so far. If she fell after Lucifer, but before the Great Flood, she would inherently have enormous celestial power that a run-of-the-mill Sinner could never wield. The fallen angel theory neatly sidesteps the limitations placed on Sinners, explaining why she seems so unconcerned with the annual Extermination—she might not be fully vulnerable to the Angelic weapons. Furthermore, her ability to make deals that seem to affect the very fabric of power distribution in Hell requires a power source greater than a soul damned sometime in the 18th or 19th century. The last piece pointing to this theory holding rather significant water is Rosie’s neck, which looks almost identical to Lute’s, and the motif of feathers, like those of angel wings, on her hat.
The Terms of Rosie’s Deal With Alastor Logically Prove She’s Not a Typical Sinner

Perhaps the most telling evidence for Rosie being someone much stronger than previously thought lies in her history with the Radio Demon, Alastor. The deal they struck, as revealed in Season 2, Episode 3—”It’s a Deal”—was that Rosie would guarantee that Alastor would, upon his death and damnation, become the single most powerful sinner in Hell. This is a fact that also forms the backbone of the “Rosie is Not a Sinner” theory.
If Rosie is merely another Overlord—a damned human soul from the mortal realm—then by definition, Alastor becoming the most powerful sinner in Hell would make him more powerful than her. Yet, the entire story around Rosie places her as an established, ancient, and highly influential force; one who would not willingly grant a newly arrived soul the ability to surpass her, unless she knew the title simply did not apply to her.
The theory suggests that Rosie is either a Hellborn entity (a creature naturally born in Hell, like Charlie or the Hellhounds) or, more likely, a unique being who never actually died in the human realm. If she never died, she was never judged and damned as a sinner, meaning she exists in a separate power category altogether. Her deal to make Alastor the “most powerful sinner in Hell” is a calculated loophole. She confirms his place within the sinner hierarchy to the absolute maximum to ensure his soul belongs to her, yet her own power, coming from her non-sinner, potentially fallen angel, or unique biblical roots, remains untouched and superior.
This distinction allows Rosie to be both a powerful entity and a helpful ally to Alastor without risking her own supremacy, even if Alastor himself is unaware of just how powerful she truly is. The Hazbin Hotel world is built on precise language and loophole contracts. Rosie’s ability to orchestrate a deal with such specific language—taking a mortal soul and making it the most powerful of a specific subset of Hell’s hierarchy—is a meta-commentary on her own true nature. It implies she holds a rank outside the competition, observing the game of Overlords from a safer, higher vantage point. Whether she is Eve, a fallen angel, or just an unknown ancient, non-damned soul, the fan theories all agree: Rosie is the key to unlocking one of Hell’s oldest and most consequential secrets.
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