Captain Wankle was a Human male who served in the Imperial Navy during the Galactic Civil War. He commanded an Imperial-class Star Destroyer and was stationed near the planet Sullust. Sometime during the Galactic Civil War, Wankle crossed paths with the Sullustan Captain Bungo Bung. During a cargo inspection on Bung's vessel, the Chubby Gundark, Wankle ordered the confiscation of a large amount of Bantha Breakfast Biscuits—a popular foodstuff produced by Biscuit Baron—from him.