Ydde was good friends with Ki-Adi-Mundi, often helping Ki tracking people on the planet. He was caught overhearing the plans of Cerean Elder Dorr-Femi-Bonmi and Ephant Mon to import swoops and other technology to Cerea in exchange for quantities of malium. He tried to escape the citadel, but was executed for his complicity by the Elder's henchmen.
- Star Wars 2: Prelude to Rebellion, Part 2 (First appearance)
- Star Wars 3: Prelude to Rebellion, Part 3 (Indirect mention only)
- Star Wars 5: Prelude to Rebellion, Part 5 (Mentioned only)