A poignant little detail I found in Jay Scarfone and William Stillman’s The Wizardry of Oz: For the 1939 film version of The Wizard of Oz, MGM designated a flying monkey named Nikko to serve as the Wicked Witch’s familiar.

Unlike the other monkeys, Nikko has very small wings. An early script, dated July 5, 1938, explains that the Witch had clipped his wings to ensure his servitude.

In that script, it’s Nikko who presses the water bucket into Dorothy’s hands at the critical moment.