Grisserno was a male Rodian who served the Alliance to Restore the Republic during the Galactic Civil War. Attaining the rank of general, he flew Y-wing bombers and proved that they were an effective starfighter when used correctly despite their limitations against newer, more modern, warships. Grisserno commanded the Alliance victory at the Battle of Denab, routing the Imperial Fourth Attack Squadron and was hailed as a hero for his efforts. His son, Welinarro, briefly served the Alliance before leaving to work for the galaxy's criminal underground.