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