His currently grown skin
is his waist, tail, right leg, left forearm, chest patch, left thumb, left index, left middle, right hand, left leg, neck, right forearm (partial), left foot, right foot, right horn, right wrist, and part of face

This means Nefarious has 42.55% control of the body and can freely move about as veins. He can also now influence movements and partially control diya