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