I finally managed to find it. I have it saved in my props runtime.

I tried the curved horns and it works fine.

I loaded Michael 3, then the curved horns. I then made sure the horns body was the active one and went to Figure / Set Parent and picked "Figure 1 - Head". And when I posed Michael the horns moved with him.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi