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