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