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