"I am not the Dread Pirate Roberts," he said. "My name is Ryan. I inherited this ship from the previous Dread Pirate Roberts, just as you will inherit it from me. The man I inherited it from was not the real Dread Pirate Roberts, either. His name was Cummerbund. The real Roberts has been retired fifteen years and living like a king in Patagonia." Then he explained the name was the important thing for inspiring the necessary fear. You see, no one would surrender to the Dread Pirate Westley.
~ Wesley explaining the truth behind the many secret identities of the Dread Pirate Roberts.
Villainous identities that have been used by more than one character; usually these are Comic Book Supervillains and names and/or titles are often passed down through generations in Families. A Legacy can also be inherited through someone taking an alias from its current bearer by force if necessary.