Max Factory is producing this Portal 2 Atlas figma. This uses flexible plastic around areas of the figure that are likely to be used to pose the figure in addition to traditional points of articulation.
These are expensive at roughly $200 each, but these are hella-detailed 1/6 scale action figures of the Portal 2 PC robots. Atlas stands 10 3/4″ tall and P-Body is 12″ tall. These action figures from Three A Trading Company are scheduled to ship in December 2013.