Draugar possess superhuman strength, can increase their size at will, and carry the unmistakable stench of decay.
According to Gregg Smith, "The appearance of a draugr was that of a dead body: swollen, blackened and generally hideous to look at."
They are undead figures from Norse and Icelandic mythology which appear to retain some semblance of intelligence.
They exist to guard their treasure, wreak havoc on living beings, or torment those who wronged them in life.
The draugr's ability to increase its size also increased its weight, and the body of the draugr was described as being extremely heavy.
Thorolf of Eyrbyggja saga was "uncorrupted, and with an ugly look about him… swollen to the size of an ox," and his body was so heavy that it could not be raised without levers.
They are also noted for the ability to rise from the grave as wisps of smoke and "swim" through solid rock.