Played by Michael Wong, LT Stone Wong is the reason why the SDU is running around in civies instead of their tactical suits. In the movie, the perpetrators have equipped themselves with more powerful weapons and dressed themselves in SDU tactical suits to confuse the Unit when they are attacked. To counter this, Stone orders his Unit to discard their suits so that they can identify who the perpetrators were.
Before Hot Toys' muscle bodies, Dragon experimented with this "rubber skin", a sleeve which is slipped over the original body. This was so that the joints would not be seen, thus giving the bodies a more realistic look. Unfortunately, the rubber skin folds at all the wrong places and looks anatomically wrong.
SDU Assaulter and SDU Breacher