Polly Lean was an agent of the G.R.E.P.S. agency. She was secretly helping Roy La Post with his scheme to make his own Kingdom of Frerpland, a kingdom of which she was going to be the princess of. She was feeding him information with a microphone/radio inside her brooch, which he listened in on. She is later captured by the Superfriends along with King Plasto and Styro.