Hazad Longbeard was a man living in Agar during the Second Age, father of Tal-Elmar, which was his seventeenth child. Though he found pride in the number of his descendants, his greatest joy was his beard, long over five feet and, unlike his sons, ruly and close to him all the time. In a short description found in the beginning of the Tal-Elmar chapter he is portrayed as "short, though, harsh-tongued, heavy-handed and quick to violence". Along with his youngest son, he delivered the ill message of Númenórean ships approaching the land of Agar.
Hazad's wife remained unnamed in the story of Tal-Elmar. A mentioned is made that he married late, due to the admiration he had for his late mother, Elmar, a woman of the "Fell Folk of the East" who had been taken prisoner by Buldar, his father, and later wedded. In a penciled note J.R.R. Tolkien proposed that Buldar should be left out of the tale and Elmar to be Hazad's wife.
Some analysts have noticed the similarity of Hazad with Dwarvish Khazâd, "Dwarves", and Adûnaic hazad, "seven". The name would then either mean "Dwarf (bearded, smaller one)" or "Seventh child", however, this remains speculation.