The Magu Magu no Mi is a Logia-type devil fruit wielded by Admiral Akainu, allowing him to transform into magma and control it at will. This formidable power enabled Akainu to turn half of an island into a magma inferno and ultimately led to Ace's demise.
In recent chapters, speculation has arisen regarding the potential link between this powerful devil fruit and the Lunarian lineage, due to shared traits.
The Lunarian race has become a focal point of interest among fans following Oda's revelation that King is one of them. Despite being mentioned briefly during the battle against Sanji, much remains unknown about this enigmatic race.

During the clash against Zoro, King's superior Lunarian abilities posed a significant challenge, with Zoro struggling to land effective blows against him.
In the battle against Zoro, King's superior Lunarian abilities proved formidable, rendering Zoro's attacks largely ineffective.

In chapter 1035, Zoro uncovered King's weakness: when the flames within King's body disappear, he becomes faster but less defensively resilient. King's flames grant him special power, enabling him to use the Karyuudon technique—a move that conjures a dragon-shaped flame from his sword, incinerating everything. Zoro even likened King's flames to magma.
Speaking of magma, it's hard not to think of Akainu, the wielder of the Magu Magu no Mi devil fruit. This has led many fans to speculate that Sakazuki's devil fruit might draw inspiration from the Lunarian race.

As revealed in chapter 1035, King was one of the test subjects at a facility owned by the World Government, alongside Kaido. Kaido himself mentioned that King was subjected to durability experiments by the government. However, could they have done more, such as extracting DNA samples from King for further research? This wouldn't be unprecedented, considering the government has done similar things with Kaido.
We also know that the devil fruit created by Vegapunk, consumed by Momonosuke, utilized Kaido's DNA. This could apply to King as well, suggesting that the Magu Magu no Mi devil fruit eaten by Sakazuki was artificially created. If true, it indicates Vegapunk's success in creating complete devil fruits, or perhaps the fruits consumed by admirals are artificial?
What are your thoughts on these hypotheses? Do they seem plausible? Share your opinions with us to engage in further discussion!