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