"Psycho Duck" is the fifty-second and final episode of The Proud Family.
Penny saves a duck when he's drowning. But soon the duck, Chester, goes psycho when Penny tells him to go home. Meanwhile, Oscar tries to get rid of him without breaking Penny's heart.
- This aired 30 minutes before the premiere of "The Proud Family Movie", part of "The Proud Family Pre-Show Party Marathon".
- Penny, Oscar, Trudy, Suga Mama and Dijonay are the only charatcers to be in all the episodes.