Established in ancient times, the Great Hunt is a Mandalorian contest of skill and glory overseen by the venerable Wookiee Huntmaster. Though the clans had been scattered, there was an attempt to keep the Great Hunt and its traditions alive. However, during one Great Hunt, the Mandalorians were surprised to see a droid among the competitors--an utterly unprecedented event.
After questioning the droid--an obsolete construction model--the Huntmaster overrode objections from conservative hunters and allowed its entry. The nameless droid proceeded to outwit and out-gun its way to victory in the Great Hunt.
When the droid returned to claim its title as champion, more arguments ensued. Ression Trana, a prominent clan leader, claimed loudly that a droid champion mocked Mandalorian traditions. The droid listened patiently until Trana accused it of being a proxy for a cowardly hunter. Without hesitation, the droid kicked Ression Trana, mid-sentence, through a window. In the aftermath, the droid earned not only the title of Grand Champion, but also its nickname: "the Defenestrator".