Cygnus Black, known as ブラック・キグナス in Japanese, is a minor antagonist in the anime series Saint Seiya. He is one of the Black Saints, specifically the Black Cygnus, mirroring the main protagonist Cygnus Hyoga. Black Cygnus is part of the group that opposes the Bronze Saints, using similar techniques and armor as Hyoga but with a darker and more ruthless personality. His role is to challenge the heroes and serve as a dark reflection of their strengths and weaknesses.