Munchkins (Muppets' Wizard of Oz)

The Munchkins reside in Munchkinland, a part of Oz, in The Muppets' Wizard of Oz. Formerly oppressed by the Wicked Witch of the East, the Munchkins were freed from her tyranny by Dorothy Gale when her double-wide trailer crushes her to death. Tattypoo is the protector and friend of the Munchkins, dropping in frequently for visits and rounds of cuddles. Glinda also drops in from time to time, though she seems to have a more distant relationship to them, displaying at best tolerance rather than affection. Though grateful and friendly, aiding Dorothy later when she's in peril, the Munchkins bear an uncanny resemblance to a certain variety of cheese eating rodent.

Behind the Scenes
Despite their outrage at being called rats, the Munchkins' later appearances at Poppyfields and the Wicked Witch of the West's castle are based on the Fieldmice in the original book.