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