User blog comment:Drayco90/Marvel vs. DC- Halloween Special: Carnage vs. Anton Arcane/@comment-4098900-20121030214106/@comment-143604-20121030234348

But it's demonstrated that he doesn't need them when he has the symbiote. In fact, the legs are powered by the symbiote itself. The symbiote has no problem creating tendrils that could serve as limbs.