Duwingo was a male Yaka slave to Maka Jeth. He served on Maka's freighter, Maka's Delight.
As a side-effect of illegal genetics done to his species, Duwingo appeared to be dumb, and also had a knack for terrible jokes. Another part of his "condition", he spoke words with the letter O longer than others without.
He later was employed by their grandson (Abigaile Kenobi's son) Nathaniel Kenobi Solo, as a double-agents in the Peace Brigade, during the Yuuzhan Vong War. Nathan did not know that they had--although not directly--killed his mother. Nathan got his revenge in the form of Yuuzhan Vong Sub-Commander Eatmo Chick'en, who killed the Peace Brigaders, after they intended to double-cross the Vong.