I've tried numerous Marvel Legends heads (Steve Rogers, Peter Parker, etc.) and other Star Wars Black Series heads, but nobody seems to fit on General Hux's neck peg. The neck is very short but General Hux's head has a socket that sits very low to match and produce an overall normal look. However, every other head I've found has a socket that is deeper inside the head and thus always ends up so close to the body once connected that the figure appears to have no neck at all.
Thank you for reading and for any insight! First time posting here!^^