Depends how you're defining matter, really. If you're including the fabric of space, then it probably can't. But this is the biblical void we're talking about - how can anything, including proto-gods, exist in that?
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'
