Kaldrigos was a dread wyrm, probably a blue wyrm, according to his name.
Many dwarves tried to kill him:
- The shadow priest Anund, who was burned to death with his by the wyrm's arcanic breath.
- Horuz Killcrow, who mistakenly stood behind the dragon. He was killed by the wyrm's tail and his was dented.
- Tunadil the Redeemer, a brave Paladin. During the fight he fell upon his own and was killed.
- Korl finally killed the dragon, piercing his heart with a .