The Mandalorians (called Mando’ade in Mando’a, meaning “children of Mandalore”) were a warlike, nomadic group of clan-based people consisting of members from multiple species. Often, they served as mercenaries and bounty hunters.
Their culture revolved around that of battle and war being a source of honor and pride in their community. The leader of the Mandalorians typically took on the title of “Mandalore.” Mandalorians were frequently allied with the Sith, most notably Exar Kun.
In later years Mandalorian Warriors wore very distinctive battle helmets with T-shaped visors that covered the entirety of their faces, which would provide inspiration for the helmets of the clone troopers. These helmets would eventually become strongly associated with the Mandalorian people.
Originally, the Mandalorian clans were Taung from Coruscant, led by the warlord “Mandalore the First”. Around 7,000 BBY they conquered a planet in the Outer Rim, which they named Mandalore after their leader. The Taung then took the name Mandalorians and were seen by many as the most skilled fighters in the galaxy, thriving in battle. They were known for their use of cutting-edge weaponry and held to a strict code of honor. These Mandalorians wore crusader armor that differed from one soldier to the next.
For thousands of years after Mandalore’s conquest, its new inhabitants would not venture far from the system they inhabited. It was not until the Great Sith War of 4,000 BBY that the Mandalorians would seek to expand their conquests and, in the process, become famous (and infamous) to the Galaxy at large.