Breath of the Wild’s Antagonist Named “Calamity Ganon”

According to our on-the-ground team at E3, the main antagonist for the game is called “Calamity Ganon.” It is unclear if this will be Ganon in his beast form or Ganon in his human form (as he was seen in Wind Waker. What does this name mean? Does this have anything to do with the state of decay in Hyrule? Let the speculation continue!