Calamity Ganon is the primary antagonist in The Legend of Zelda: Breath of the Wild. He represents a monstrous form of the ancient evil that has plagued the land of Hyrule for centuries, manifesting as a powerful and malevolent force seeking to destroy everything in his path. In the game, Calamity Ganon has taken over Hyrule Castle, corrupting the land and its inhabitants. Players must defeat him to restore peace to Hyrule, utilizing the help of allies like Princess Zelda and the four Divine Beasts to weaken his power before the final confrontation.