Mountaineers

After Glinda the Good and the Rescue Expedition save the Skeezers and Ozma and Dorothy from the waters of Skeezer Lake, she goes to the Flatheads and deposes Su-dic and Rora. Using her magic she opens each person's canned brains, spreads them on top their heads, and causes a skull cap to grow over and encase them like other normal people. So the Flatheads were no longer flatheaded, and needing a new name they are dubbed the Mountaineers.