Mazi was a Human male from Alderaan. The day before Alderaan's destruction by the Galactic Empire's first Death Star, Mazi went to Delaya with his friends, Lan and Jez, to watch a smashball tournament. Following his homeworld's destruction, Mazi and his friends became thieves to survive on Delaya. They tried to rob Princess Leia Organa but were called of by Ferus Olin, who threatened to stop giving them odd jobs. Afterward, the three of them decided to join the Rebel Alliance as soldiers.