"Silver Swan (Helen Alexandros)"@en . "yes"@en . "Silver Swan"@en . "Roy Thomas, Gene Colan"@en . . . "Flight, creates powerful sound waves with her voice, super strength."@en . . "Helen Alexandros was a homely ballerina passed up for roles until she struck a bargain with her ancestor, Mars: power and beauty in exchange for killing Wonder Woman. She had great strength, the ability to fly, and a powerful sonic scream."@en . "Helen Alexandros"@en . . "Helen Alexandros was a homely ballerina passed up for roles until she struck a bargain with her ancestor, Mars: power and beauty in exchange for killing Wonder Woman. She had great strength, the ability to fly, and a powerful sonic scream."@en . . . .