Demise

Demise's powers and abilities

As the Demon King himself, Demise has an incredible amount of power which makes him one of the most, if not the most powerful villain to appear. His powers can overwhelm even deities and makes him the supreme ruler of the Demon Tribe, striking fear into most beings. Even his sword Ghirahim, who has superb abilities himself, willingly follows his master without question.

Despite being sealed by Hylia, Demise somewhat broke the seal by himself (as The Imprisoned) three times. He can also open a portal to a different dimension, where he can summon lightning at will. Fi states that Demise has conquered time itself, further showing the potency of his powers; she also states Demise is the source of all monsters.

Though having immense potential, Demise's power is not absolute. He was sealed by Hylia in the past (not before mortally wounding her though), completely obliterated by the omnipotent Triforce's power in the present, and ultimately defeated by Link in their duel. Being an evil entity, Demise is vulnerable to the True Master Sword. He is however, much more resistant to its effects in comparison to his followers.

Demise's weaknesses

The Master Sword was originally crafted by the goddess Hylia as the Goddess Sword, and was later forged into the Master Sword by the Goddess's chosen hero and its spirit, Fi, who bathed it in the three Sacred Flames located across the land that would become the Kingdom of Hyrule. Din's Flame in particular imbued the sword with the Power to Repel Evil, a power augmented after the Sword received the blessing of Zelda, which transformed the blade into the true Master Sword. Although not always, it is the only weapon that can defeat Ganon in the games it appears in.

The Master Sword is often seen to choose or accept its master by its own will, always a hero who has gone through great trials that test his courage, wisdom and power to prove him worthy of wielding it. This may be the conscious choice of the sword's spirit, Fi, who sleeps eternally within the sword and only assists her heroic master.