Robbie Rotten (also known as Glanni Glæpur in Iceland) is the main antagonist of the Icelandic children's program, LazyTown.
He is the nemesis of the series' main protagonists, Sportacus and Stephanie Meanswell, who promote exercise, healthy eating and an active and healthy lifestyle. Being extremely lazy, Robbie naturally opposes their attempts to spread a healthy influence to the people of Lazytown and employs various schemes to discredit healthy living and run "Sportaflop" out of Lazytown every episode, although his plans are always foiled in the end. He is based on his incarnation from the original musical.
He was portrayed by Stefán Karl Stefánsson.