In the "Star Wars" novel "The Book of Boba Fett," Mando (Din Djarin) does not specifically aid in fighting against any particular organization. "The Book of Boba Fett" focuses primarily on the story of Boba Fett and his rise to power as the leader of the criminal underworld on Tatooine after the events of "The Mandalorian" series. While Mando and Boba Fett have crossed paths in the television series, the novel primarily revolves around Boba Fett's journey rather than Mando's involvement in any particular conflict or organization.