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