Tack Hierogryph was a male Snivvian communications assistant to the Selkath, Brashus. He was born on the Snivvian homeworld and had been found by the renegade Jedi, Nathaniel Kenobi, when he and his crew were attempting to help Jedi escaping Order 66 get away. It was assumed that he survived the Great Schism and helped the Jedi to defeat the Traitors.