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