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Ancalagon, also known as Ancalagon the Black, is a minor antagonist in J.R.R. Tolkien's Middle-earth legendarium, appearing in The Silmarillion.

He was the most powerful and infamous of all dragons bred by Morgoth during the First Age of Middle-earth. He is the largest Dragon to have ever lived and the greatest of all winged Dragons. The fire he breathed was hotter than most other dragons.


Being bred

Morgoth bred Ancalagon sometime in the late First Age. Ancalagon was intended to be the Angband's last defense of an invasion: he would crush the enemy and obliterate them. Morgoth made Ancalagon far more powerful than even Glaurung, his ancestor. Unlike other Dragons, Ancalagon could fly. He was the first of his kind to do so.

War of Wrath

He burst out of Tharangorodrim volcano during the War of Wrath and terrified the Host of the Valar, making them retreat and consider ending the war, because of the immense casualties caused by Ancalagon's devastating fire. Just when it looked hopeless, Eärendil the Mariner and Thorondor the Eagle with his flock arrived, and they battled Ancalagon and the other Dragons.


Soon, almost all Dragons were defeated, and Eärendil fought Ancalagon throughout the night. As dawn broke, Eärendil got the upper hand, and killed Ancalagon, hurling him out of the sky.

The Sun came up upon his death, as Ancalagon smashed onto Tharangorodrim, destroying it. Ancalagon's death ensured that the Host of the Valar would be victorious.

Later Mentions

In The Lord of the Rings, Gandalf said that Ancalagon was probably the only Dragon, and the only being, capable of destroying a Ring of Power, except the One Ring.



  • Ancalagon is a Sindarin word usually translated as "Rushing Jaws".


            Middle earth sbg-1-1024x257.pngVillains

Dark Armies
Leaders: Morgoth | Sauron (Conquest, Shadow of Mordor) | Saruman (Peter Jackson)
Nazgûl: Witch-King of Angmar | Khamûl | Helm Hammerhand | Suladan | Isildur | Nazgûl Sisters
Balrogs: Durin's Bane | Gothmog | Tar-Goroth
Dragons: Smaug | Ancalagon | Scatha | Drogoth the Dragon Lord | Glaurung
Great Spiders: Shelob | Ungoliant
Werewolves: Carcharoth
Goblins/Orcs: Gorkil the Goblin King | Great Goblin | Azog | Bolg | Brogg the Twin | Mogg the Other Twin | Yazneg | Grishnákh | Gothmog | Gorbag | Zog the Eternal | Gazmog
Uruk-hai: Ugluk | Lurtz | Shagrat | Hodhvarz
Black Númenóreans: Mouth of Sauron (Battle for Middle-Earth) | Agandaur | Black Hand of Sauron | Hammer of Sauron | Tower of Sauron
Olog-Hai: Brûz the Chopper
Men of Darkness: Ar-Pharazôn | Gríma Wormtongue | Bill Ferny | Lheu Brenin | Easterlings | Corsairs of Umbar | Dunlendings | Haradrim
Various Creatures: Barrow Wights | Trolls | Wargs | Fellbeasts | Gûlavhar | Watcher in the Water

Corrupted Elves
Fëanor | Celegorm | Caranthir | Curufin | Maeglin | Celebrimbor

Corrupted Hobbits
Gollum | Lotho Sackville-Baggins | Ted Sandyman

Alfrid Lickspittle | Master of Laketown | Old Man Willow