From Toy Guru about King Hssss, on the Matty forums:
"The figure you saw at SDCC is a Horsemen sculpt, not an articulated toy. The final toy will have bendy snake heads and an articulated jaw on the main head."
How do you explain something to people who are ignorant of facts? Ah well. I subscribed for next year, and have a countdown clock until the Rise of the Snake Men begins again.