|This article belongs to the Classic Continuity|
Duffy resembles a typical Galvan except she is taller than an average member of the species. Her head is long and narrow at the chin, she has little spines coming out of the back of her head with green bows on each one. She wears a nurse's outfit with a hat with two semi-circles.
Ben 10: Omniverse
- Malgax Attacks (first appearance)
Duffy's name is based on the story editor/writer of many Ben 10 episodes, Dwayne McDuffie.