A bit of a preface. This is a thread about potential threats WITHIN Krakoa. External opponents they may have or have created do not apply. That said, if a internal mutant enables an external threat, they will be listed. Similarly, potential splinters will not apply. If the X-men or New Mutants wish to remove their involvement/association with the krakoan government, it will not be regarded as a threat, because splits in ideology does not inherently account as a threat to the nation of Krakoa. Now with this preamble out of the way, I'd like to list some versions I believe currently exists for Krakoa
1. Mr. Sinister - This is Number One without question in my mind. From his feigning of being controlled by Xavier, to his own Cloning facilities both on and off krakoa To his creation of Chimera without forewarning or permission. It's kinda impossible for Sinister to not top the list. he has both the means and the resources to be a major point of contention within Krakoa.
2. Mystique - Scorned, Driven and built for sabotage. Her grievances against krakoa and her orders from Destiny make her a clear and obvious threat to the State from within.
3. Beast- This option is slightly different from the above as he's not currently expressed a desire to turn against the nation of Krakoa, but has expressed both the mindset and resources to potentially be listed. A major reasoning is Beast's delusions of Grandeur and God Complex.
4. Vulcan - The most literal example of this idea of them all. He currently stands as an actual ticking time bomb for beings beyond this universe. Add his personal powers and his true personality and he's unquestionably a threat to Krakoa.
5. Jamie Braddock - Kinda self explanitory given his insanity, disposition towards cruelty and tendency to change his mind on a whim.
6. Fabian Cortez - The constant belittling, delusions of grandeur, propensity to cruelty, excessive self interest and his own powers. He's just waiting for the opportunity to screw people over.
7. Shaw - Never forget Shaw is about Money and Power first and foremost. And Emma and Kitty's dismantling of his power network can always be undone.
8. The traitor in S.W.O.R.D - It should not be forgotten that a mutant member of the SWORD base is already a double Agent for Orchis.
9. The Traitor in X-force - Similarly to the above, the mutant that is aligned with Russia.
I would like to hear any extras folks would bring forward.