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