The Aggressor was a customized Aggressor-class Star Destroyer that was created by the Mandalorian Protectors to be used as the Flagship of the Mandalore that would return the Mandalorian peoples to political and military respect in the Galaxy - to reinvigorate the Mandalorian culture, it was originally believed that Mandalore Boba Fett would be the one to command this vessel however after an incident where the Nanovirus cure that Clan Fett had been given was proven to be fake resulted in Boba Fett's death, the Aggressor was then taken by Boba's son-in-law Ghes Orade whom proclaimed himself Mandalore and rallied the Mandalorian people for revenge against the Galactic Alliance under the title of "Mandalore the Avenger".