Since establishing Krakoa as a Mutant Nation, the X-Men seem to be experiencing a poisoning of the mind and soul. It could be through the food that Krakoa provides or just a psionic influence from living there, but somehow, there has been a drastic dark shift for the X-Men since they made the mutant island their home.
The X-Men first encountered Krakoa in Giant-Size X-Men #1 (1975) by Len Wein and Dave Cockrum. Using Charles Xavier's Cerebro, the X-Men detected a very powerful mutant on an island in the South Pacific. When they left to search for it, they found out that the mysterious presence was the island itself and that it was actually a mutant. It attacked the X-Men and tried to use them as sustenance. Right away, the island acted as a predator to the X-Men and saw them as its prey.
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Later, Professor X used Cypher and Warlock to experiment on Krakoa to make it a suitable home for all mutants. For most of them, it doesn't seem strange that they are living on an island that was once their enemy. They also didn't have any reservations about using the island as food. In Marauders #1 by Gerry Duggan and Matteo Loli, Iceman tells Kitty that «if you get hungry, everything on this tree is edible and it's really delicious». Since they moved there and consumed the plantlife of Krakoa, something has changed about the X-Men. They have decided to use the names and symbols of some of their worst enemies, which would only have happened if somehow they have been twisted through their use of Krakoa.
In order to distribute medicines made on Krakoa to the world, they have formed the Hellfire Trading Company whose structure mimics the Hellfire Club, one of the
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