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