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