22. Frank Morgan, who replaced W.C. Fields, eventually played five separate roles
The parts of Professor Marvel, the doorman at Emerald City, the cab driver in, the guard at the Wizard’s door and the Wizard, were played by Frank Morgan. In part because of Field’s financial demands. Another factor considered was his well-deserved reputation for keeping himself lubricated with alcohol on the set. It was quickly learned by all involved that Morgan shared the latter attribute with the famed comedian.
When Morgan reported for his first day of shooting he brought with him a suitcase, which he resorted to frequently throughout the day when his presence wasn’t required before the cameras. the suitcase contained champagne. According to Ray Bolger, it never had a detrimental effect on either his performance or his demeanor, other than when access to his drink was denied he became morose and uncooperative. According to Bolger, on at least one occasion, director Victor Fleming stopped shooting and told a disgruntled Morgan to go get himself a drink.