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- "Man, he looks just like me...only not as devilishly handsome."
"Heh. As if!"
- —Nhukx and Xigbar on his original.
Nhukx is the Replica of Kuhn in Kingdom Hearts: Arcana. He serves as Xigbar's apprentice in The World that Never Was. Despite his name containing an X, he is not a Nobody of any sort.
During his Arena fight with Haseo, who summons his Avatar Skieth on a whim, Kuhn responds by summoning Magus. Somewhere in the fight, Kuhn uses Magus' Propogation ability to create a duplicate of the Avatar - and, in effect, Kuhn. The fight ended in a rogue Skieth Data Draining the Magus copy, which resulted in the Kuhn duplicate's ejection from The World's system. The data was forcefully reverse-digitized into Ansem's lab in Hollow Bastion, bringing the Kuhn Replica into creation. Not long after, Xigbar came across him and brought him back to The World That Never Was.
Nhukx, like his original, appears as a young man with blue hair, albeit darker, shorter and slicked back like Braig's. He no longer has any of his facial tattoos, and his skin is slightly tanned. He wears a carbon copy of Braig's guard uniform, right down to the fraying bandana.
Nhukx's personality seems to be a combination of Kuhn's cheerfulness and Braig's laid-back and cocky nature. Just like his mentor, Nhukx has an interest in the Keyblade, but also seeks the Epitaphs that his original and the other Users wield.
As Xigbar's Apprentice, Nhukx uses the element of Space and wields dual Arrowguns; Xigbar's Sharpshooter.