Who is Sphinx in Re:Zero? The “Witch of Greed” Failed Clone Explained
Among the many mysterious figures in Re:Zero − Starting Life in Another World, there are villains who terrify through power, and others who disturb through ideology. Then there is Sphinx—a character who manages to do both.
For many anime-only fans, the name might not ring a bell yet. But readers of the later light novel arcs already know that Sphinx is one of the most chilling antagonists in the entire story. Emerging as the mastermind behind the catastrophic events shaking the Vollachia Empire, she represents a haunting echo of the legendary Witch of Greed, Echidna.
What makes Sphinx fascinating isn’t just her power—it’s the tragic, almost existential horror behind her existence.
The Birth of a “Failed Witch”
To understand Sphinx, you first need to understand Echidna’s obsession.
About 400 years before the main story, Echidna attempted something that perfectly fits her personality: she tried to cheat death through experimentation. Using the body of Ryuzu Meyer, she began creating clones meant to serve as vessels for her soul.
The goal was simple in theory: transfer the Witch of Greed’s consciousness into a new body and achieve immortality.
The result?
A disaster.
Sphinx became the first completed clone, but the experiment failed spectacularly. The vessel couldn’t contain the overwhelming mass of Echidna’s soul, memories, and knowledge. Instead of a perfect reincarnation, the result was something incomplete.
What emerged was a being with fragmented identity, incomplete emotions, mechanical behavior, and a hollow sense of purpose.
In other words, Sphinx wasn’t Echidna—but she wasn’t entirely separate from her either.
Imagine waking up with knowledge you don’t fully understand, emotions you can’t feel, and a purpose you can’t truly fulfill. That’s basically Sphinx’s existence.
And it shaped everything she would become.
A Living Weapon in the Demi-Human War
History in the Kingdom of Lugunica remembers Sphinx as more than just a failed experiment.
Centuries ago, she rose as one of the most feared enemies during the Demi-Human War.
Rather than fighting like a traditional commander, Sphinx used something far more disturbing: necromancy.
Her battlefield strategy revolved around creating endless armies of the dead.
- Corpse Soldiers – resurrected bodies used as disposable fighters
- Parasite organisms – creatures capable of hijacking living hosts
- Advanced magical knowledge inherited from Echidna
This made her incredibly difficult to stop. Killing her soldiers meant little when she could simply raise more.
But what makes her truly terrifying isn’t just the scale of destruction she can cause.
It’s the lack of emotion behind it.
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Powers That Make Sphinx a Top-Tier Threat
While Echidna herself was more of a scholar than a warrior, Sphinx ironically turned out far more dangerous in combat.
Below is a quick breakdown of her core abilities.
| Ability | Description | Threat Level |
|---|---|---|
| Sacrament of the Immortal King | Raises dead bodies as controllable puppets | Extreme |
| Parasite Creation | Infects and controls living hosts | High |
| Magic Mastery | Light and temperature-based spells | High |
| Close Combat | Skilled in martial arts unlike Echidna | Moderate–High |
Her signature technique, Sacrament of the Immortal King, essentially turns battlefields into resource farms. Every fallen enemy becomes another soldier.
From a narrative standpoint, it also reinforces her theme: life and death are simply data points to analyze.
The Catastrophe in the Vollachia Empire
Sphinx returns to the spotlight during the later arcs of the story, where she becomes the main antagonist behind the chaos engulfing the Vollachian Empire.
Her goal isn’t conquest.
It’s research.
More specifically, she wants to understand something she has never been able to feel: human emotion.
And the person she chooses as her “test subject” is none other than Priscilla Barielle.
Priscilla’s unbreakable confidence and pride fascinate Sphinx. She becomes obsessed with seeing whether that spirit can be shattered.
The events that follow escalate into what many fans call the Great Disaster of Vollachia—a chain of battles and destruction that push the story into some of its darkest territory yet.
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When the Machine Almost Became Echidna
One of the most mind-blowing moments in these arcs happens during Sphinx’s near defeat.
After being struck by the legendary Yang Sword, Sphinx doesn’t simply die.
Instead, she evolves.
By repeatedly processing battle data and learning through destruction, she briefly reaches a state that resembles the real Echidna. It’s not a full resurrection—but it’s disturbingly close.
For a moment, the failed clone becomes something dangerously similar to the Witch of Greed herself.
And that raises terrifying questions about the future.
Why Fans Find Sphinx So Fascinating
Among the Re:Zero fandom, Sphinx sparks a lot of discussion for one simple reason: she’s not evil in a traditional sense.
Her actions are horrifying, yes. But they’re driven by something closer to programming than malice.
Fans often debate questions like:
- Is Sphinx responsible for her actions if she lacks emotions?
- Is she a villain—or just Echidna’s biggest mistake?
- Could she ever develop genuine humanity?
Some theories even draw parallels between Sphinx and Emilia, suggesting both may have deeper connections to powerful witches than we realize.
Whether those theories turn out true or not, they show just how layered this character really is.
Final Thoughts
In a series already packed with complex antagonists, Sphinx stands out because she represents something uniquely tragic.
She isn’t a tyrant seeking power.
She isn’t a fanatic driven by ideology.
She’s a broken experiment searching for meaning.
And that makes her far more unsettling than any traditional villain.
As Subaru Natsuki and his allies continue facing the consequences of Echidna’s legacy, one thing is certain: Sphinx isn’t just another enemy. She’s a reminder that in the world of Re:Zero − Starting Life in Another World, the past never stays buried—and sometimes the most dangerous monsters are the ones created by curiosity.
