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