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