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