Tuzin Gast was a researcher working for Binring Biomedical Product; he was a Human male.
Gast held the position of principal scientist, deeply involved in Project Chubar. This research project was initiated by Emperor Palpatine with the goal of creating nonhuman spies who were both intelligent and loyal, accomplished through genetic and chemical treatments.
Following the events of the Battle of Endor, Gast aided Warlord Zsinj in obtaining a controlling interest in Binring Biomedical. Soon after, he experienced a mental collapse caused by the remorse he felt for his morally questionable research activities.
Gast facilitated the escape of Voort saBinring, one of his most successful experimental subjects. He then detonated an explosive, taking his own life and destroying a significant portion of his research facility located on Saffalore. Prior to triggering the explosion, he created a sufficient quantity of Gamorrean blood plasma to give the false impression that saBinring had died in the explosion alongside the other test subjects. Gast's severed head was discovered within the wreckage.
Edda Gast, his niece, outlived Tuzin Gast and seamlessly continued his research endeavors.