One of the most iconic pieces ofSupermanlore in the DC Universe is his Fortress of Solitude, essentially the Man of Steel’s version of the Batcave. This base was recently destroyed during theAbsolute Powercrisis event. However, it seems DC is now gearing up to debut a new Superman-related base, though this one is made entirely of Kryptonite.
One major question remains: who exactly is the owner of this anti–Fortress of Solitude? We might just have the answer.
TheSummer of Superman(a Man of Steel-centric initiative set to bring a plethora of new Super-Family-related comics) is almost upon us. Among the most anticipated titles isSuperman Unlimitedby Dan Slott and Rafael Albuquerque, debuting on June 14, 2025.
While the release is still over a month away, Slott’s appearance at WonderCon 2025 offered a sneak peek at the exciting changes coming to the Man of Steel’s world. As reported by Comic Basics, one of the key teasersSlott revealed at the convention was the impending debut of a Kryptonite cave and throne.
DC Introduces the Antithesis of Superman’s Fortress of Solitude
Cover D Steve Beach Variant forSuperman Unlimited#2 (2025)
Slott kept details about the Kryptonite cave and throne under wraps, but the teaser alone is visually evocative and undeniably exciting. Typically,Kryptonite is rare, especially in large quantities. However, it’s clear Slott is ready to flip that premise on its head with an entire cave made of the radioactive material. This reveal also aligns with what fans know about the series so far, as both the synopses andSlott’s interviews have made it clear that Kryptonite will play a major role in the narrative, one that will undoubtedly keep Superman in a constant state of danger.
What’s particularly cool about a Kryptonite cave, especially one clearly serving as a villain’s lair, complete with a throne, is that it is the antithesis to the Man of Steel’sFortress of Solitude. Superman’s Fortress has always been a place of refuge, composed of Sunstone crystals. Now,DC appears to be introducing a base made entirely from his greatest weakness.It’s an exceptionally cool development. However, one major question remains: who exactly is the owner of this anti–Fortress of Solitude? We might just have the answer.
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Who Is the Kryptonite King? DC Is Taking the Threat of Kryptonite to a New Level
Main Cover by Rafael Albuquerque forSuperman Unlimited#2 (2025)
Thanks to the synopsis forSuperman Unlimited#2, fans can infer that the Kryptonite throne likely belongs to the Kryptonite King. While the synopsis doesn’t directly mention the throne or the cave, it makes sense that such a seat of power would be his. This is further supported by the line:“The epicenter of this new Kryptonite power reverberates from the Emerald City — a nation-state positioned atop a massive stockpile of this incredible natural resource.”The reference to this“stockpile”likely points to the cave, and, by extension, the Kryptonite King’s throne room. While much remains unknown, it’s clearSuperman’sKryptonite threat just got a whole lot more intense.
Enter: the Krypto-Knights! Superman faces a brave new world — radical change sweeps the globe, and the ramifications of the Kryptonite asteroid reach a fever pitch! The epicenter of this new Kryptonite power reverberates from the Emerald City — a nation-state positioned atop a massive stockpile of this incredible natural resource and ruled with an iron fist by the Kryptonite King and his dreaded Krypto-Knights! Can Superman hope to continue his fight for truth and justice with Kryptonite flooding the streets with danger? Plus: the Daily Planet’s expansion continues, and Gorilla City’s representative joins the team!
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