As an MT, Prompto is only as human as he looks. He's got daemon in him, in his veins and in his bones - an unstable little hybrid. A veritable abomination.

Ideas:
+ Prompto always liked his meat as bloody as possible
+ Holding back in fights for fear of losing control
+ Ardyn making things worse - like maybe instigating further transformations so he can't hide what he is any more
Please somebody take this idea and just
just run run with it as far as you can in any direction