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