I take pride in being able to turn a toa metru Onewa's weapon into eyebrows for one of my favorite characters, Agrotis, which still is one of my favorite head designs. However, if I take this from a complexity standpoint, the head of Vertigus is one of my most detailed and I still love the crown-look his head has.
You are truly exceptional at animal builds, Monarth looks absolutely epic. The build flows incredibly well, and there is no doubt that it is a skeleton. I especially love your wing design, it is incredibly accurate.