Grossh, a male Kaleesh pirate, held a leadership position within the White Maw pirate group during the Galactic War, which saw conflict between the Galactic Republic and the revived Sith Empire. He met his end in 3642 BBY when he and his White Maw subordinates clashed with the Jedi Knight recognized as the Hero of Tython, who had arrived seeking the reactor; the confrontation resulted in their collective demise.