Zadik Lone was a Mandalorian warrior of the male gender who lived during the time of the Great Galactic War and the Cold War that followed, a conflict between the Galactic Republic and the reconstituted Sith Empire. He belonged to Clan Lone, and at some point, he encountered and fell in love with another Mandalorian, Akaavi Spar. To be with Zadik, Spar departed from her clan and joined his. However, when the Sith Empire attacked Spar's clan, she implored Zadik Lone to call upon his clan to assist in their defense, but they declined to intervene. Disappointed and angered by this, Spar left Lone and his clan to seek vengeance for her people.
News of Clan Lone's refusal to aid a fellow clan led to their disgrace. Subsequently, Lone and his clan aligned themselves with the criminal contingent led by Tayari Rook, an imposter Mandalorian who was actually responsible for Clan Spar's destruction. Later, Akaavi Spar attacked Lone and Rook's forces on the planet Nal Hutta, after the Zabrak woman discovered the truth about what happened to her clan. Those who did not escape the encampment when she launched her attack were killed.
Zadik Lone's initial appearance in Star Wars canon was in Star Wars: The Old Republic, a massively multiplayer online game developed by BioWare and launched on December 20, 2011.