Let's Start.
Darkness might have makes someone stronger but, their heart might be weaker.
Riku was supposed to received the KK, darkness entered his heart, he didn't receive it.
That was what everyone thought how Riku didn't received the keyblade.
What i think is, Riku would have received it but he didn't want it.
Riku denied the Keyblade's power.Since Darkness was at his side and his heart faltering, The Keyblade went to Sora.
Well, We see him putting something dark to Ven before he freezes him.
It shows his unknown connection to darkness.
I think that MX received that keyblade because he has complete control over Light and Darkness.
MX probably mastered both so that he can wield the keyblade more efficiently.
MX looks like a Scientist and acts like one, MX probably knows anything about the keyblade, Light&Dark and Kingdom Hearts.
MX has connections to Xehanort right?MX might also be "power-hungry" type of villain.
Which leads him to use KH as some kind of battery.
Well, that's it.
You wouldn't receive a keyblade if your heart is weak.Nomura said:"Keyblades have 2 different constitutions, either from the Light side or the Dark side. This is merely the exterior key. The inner key can act from either side and its abilities won’t change. There is no clear division between Good and Evil."
(Much Like the Jedi and the Sith XD)
Darkness might have makes someone stronger but, their heart might be weaker.
Riku was supposed to received the KK, darkness entered his heart, he didn't receive it.
That was what everyone thought how Riku didn't received the keyblade.
What i think is, Riku would have received it but he didn't want it.
Riku denied the Keyblade's power.Since Darkness was at his side and his heart faltering, The Keyblade went to Sora.
We think that MX is the main villain cause of what he did to VAT.Master Xehanort said:"Those that submit to darkness are not qualified to wield the keyblade"
Well, We see him putting something dark to Ven before he freezes him.
It shows his unknown connection to darkness.
I think that MX received that keyblade because he has complete control over Light and Darkness.
MX probably mastered both so that he can wield the keyblade more efficiently.
MX looks like a Scientist and acts like one, MX probably knows anything about the keyblade, Light&Dark and Kingdom Hearts.
MX has connections to Xehanort right?MX might also be "power-hungry" type of villain.
Which leads him to use KH as some kind of battery.
Well, that's it.