The Adventures of Blinky Bill (1993)

S1E24 Who is Blinky Bill

A new koala shows up in town, mirroring Blinky Bill’s appearance but having a totally different personality. As a prank, they decide to switch roles, leading to chaos among the townsfolk. Will anyone uncover their ruse? Meanwhile, Blinky sees an opportunity to settle a past grievance while posing as the other koala.