Crusty Doozer is an elderly Doozer who appears in the third season Fraggle Rock episode "The Cavern of Lost Dreams." Along with his companion Yeaster Doozer, Crusty is one of only two Doozers who remain from the original Doozer settlement, left to guard The Cavern of Lost Dreams while the others sought a new source of building material. Crusty shows up in a new hard hat (but still with his beads) in the chorus of Doozers who are singing to Sprocket about the Doozer way of life in the episode "Sprocket's Big Adventure."