The Gjallarhorn was designed and personally crafted by Feizel Crux as a gift to the Guardians who fought the Battle of the Twilight Gap. It was forged from the armor of the Guardians who fell in battle.
Bungie 3D modeller and Gjallahorn's designer, Mark Van Haitsma, added a wolf onto the weapon for each day he spent working on it. So far, a total of 16 wolves can be seen in in the various images of the weapon.
Knights and gladiators inspired the design of the Gjallarhorn.
The Gjallarhorn was used in the Destiny live action trailer Become Legend.
During the E3 2013 gameplay demo, the Gjallarhorn was called the "Wolfpack." However, during a closed-doors session, Bungie revealed that this name was made up as a joke, similar to how the Patience and Time was nicknamed "Better Than Yours."