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