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