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