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