There's one character whose status is a little ambiguous.
Dr. Lugae, the scientist fought in the Tower of Babil, seemed fairly lucid compared to the tempered thralls making up the vast majority of the Telophoroi. And when he does express loyalty to anyone, it's specifically to Zenos.
On the other hand, the form he's fought in is a direct reference to the Lugae fight in FFIV, in which Dr. Lugae turned himself into a machine zombie thing. It's possible that the same holds true for his XIV counterpart, in which case a primal's influence would be a likely candidate for him suddenly being... well, that. It would be a pretty hasty transformation if so, but then the same was true for Gunnhildr's Blades in Delubrum Reginae.