Though they are nearly thwarted by the Wicked Witch of the West (Margaret Hamilton), the gang, of course, makes it to the Wizard (Frank Morgan ... for his role in The Wizard of Oz.
There's nothing quite like seeing The Wizard of Oz for the first time ... He was perfect for the Cowardly Lion. Frank Morgan got the role of the Wizard after W.C. Fields demanded too much money.
The Wizard of Oz was an entertainment franchise before the concept even existed. It also helped to develop and even invent the genres of dark fantasy and what we now call "isekai." Frank L.