Do you want to compare X-23 with Hollow? Discover the powers, weakness & weapons of X-23 and Hollow from X-23 Biography and Hollow Biography. Find out all about X-23 and Hollow.# Check out how is X-23 unique and distinct from Hollow. Discover their love interest, sidekicks, family tree and the movies and games list in which X-23 and Hollow have appeared. Find out everything about them here!