Mand'alor

Mand'alor was the title assumed by the sole leader of the Mandalorian people. Their Protectors established a balance of control in the Mandalorians' warrior clan society. Pre Vizsla, leader of the Mandalorian splinter group Death Watch, took the title of Mand'alor during his takeover of Mandalore, the Mandalorian homeworld.

During the reign of the Galactic Empire, the former Mandalorian super commando Gar Saxon, had wished to be Mand'alor and rule over the Mandalorians. The leader of the Protectors, Fenn Rau, claimed Saxon had no honor, thus Saxon was unable to claim the title. However, he was installed as Viceroy of Mandalore by the Empire.

Behind the scenes
"Pre Vizsla—played by Jon Favreau—he is the person who's trying to maintain historic Mandalore. He is the one that's maintaining their history, the concept of the Mand'alor, the one leader, and he wants to usurp Satine. [...] He is the lineage of the Mandalorians—at least, he's convinced himself that he is."

- Dave Filoni

The title of Mand'alor first appeared in Tales of the Jedi: The Sith War 1: Edge of the Whirlwind, the first issue in the Star Wars Legends Star Wars: Tales of the Jedi—The Sith War series of comics, which was published by Dark Horse Comics in 1995. The title became canon when it was mentioned in a featurette that was included in Star Wars: The Clone Wars: The Complete Season Two, a box set available on Blu-ray or DVD that included the entirety of the second season of The Clone Wars that was released on October 26, 2010.