This was part of Kaiyodo's stand which was showing off their new line of Revoltech figures - these are going to be *very* popular indeed. The joints use a ball joint system called Revoltech which you would have seen before in kaiyodo's line of
Keroro Gunsou figures.
These figures are extremely articulate and can just about do any pose you can think of including the adjusting-underpants-while-driving pose.
Kaiyodo plan on releasing two figures in the Revoltech line on the 15th of every month and the first ones you will see are Dante from Devil May Cry 3, Getter1 and Dougram.