Like Yookoohoos generally, Mrs. Yoop is a cryptic figure about whom little is known. She lived or lives in her castle in a remote area of the Gillikin Country; her usual form (not necessarily her natural form) was that of an attractive but gigantic woman, several times taller than a man. She was or is the wife of the giant Yoop who is imprisoned for his acts of cannibalism. (The Tin Woodman of Oz)