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