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Tathamet battling Anu.
Title The Dark God
The Dark Dragon
The Lord of the Burning Hells
The Dragon
The Prime Evil
The Beast
Supreme commander and creator of the Burning Hells
Champion of the Space (formerly)
God of Seven Heads
Old One
Progenitor of the hell and evil
Gender Male
Affiliation Burning Hells
Relatives Anu (creator)
Diablo (son)
Baal (son)
Mephisto (son)
Azmodan (son)
Belial (son)
Andariel (daughter)
Duriel (son)
Rathma (great-grandson)
Leah (granddaughter)
Lilith (granddaughter)
Lucion (grandson)
Tyrael (son-in-law)
Auriel (daughter-in-law)
Malthael (son-in-law)
Itherael (son-in-law)
Imperius (son-in-law)
Status Deceased
Appearances Diablo III
Book of Cain
It is the sum total of all seven Evils housed within one body. There is an ancient legend, known only to a few, of the great Dragon, Tathamet, who was the original embodiment of evil. The legend says that he was ripped apart during an epic battle with Anu, and that the Burning Hells are composed of his remains.
~ Tyrael (src)

Tathamet, The Prime Evil, was a seven-headed dragon of all darkness and vileness. It was known as the Prime Evil and was created as a cast off of all the dark attributes within Anu long before Sanctuary came into existence. Separated from one being, Tathamet and Anu were both trapped within the same place and they battled with each other for an indefinite length of time. Eventually, the evenly matched adversaries destroyed each other, causing the universe to come into being.

After its death, Tathamet gave birth to the seven Great Evils, each being formed from one of Tathamet's heads while its body became the foundation of the Burning Hells.

Titles and epithets[]

  • Dark Dragon
  • Fallen Dragon (removed from the second book)
  • God of Dark and Flame
  • The Dragon Lord
  • The Destroyer
  • The Destroyer of Worlds
  • The Evil One
  • The Fallen
  • The Great Enemy of all life
  • The Great One
  • The Ravager of Worlds
  • The Defender
  • Master, Lord
  • Dark One
  • The great dark god of the Nameless Darkness