The enraged rajah was played by Edgar Kennedy. "Big Ed" was a former boxer, who was still fighting professionally even as his new career in screen comedy started to take off. In the 'teens he made over 60 films for Mack Sennett, before moving on to other studios and developing a reputation as a master of the "slow burn." Kennedy played the foil to the likes of Harry Langdon, Laurel and Hardy, and the Marx Brothers in the years to come.
A Flirt's Mistake was directed by George Nichols, who also appears as one of the flirts trolling the park with Arbuckle. Nichols was an experienced actor who had served as D.W. Griffith's assistant at Biograph, before joining fellow Biograph alum Mack Sennett at Keystone. He continued to work as both a director and occasional actor, and was among Mabel Normand's favorite supporting players.
