Will Rogers
Hank Martin
Acting
William Farnum
King Arthur / Inventor
Acting
Frank Albertson
Emile le Poulet / Clarence
Acting
Maureen O'Sullivan
Alisande / Woman in Mansion
Acting
Brandon Hurst
Merlin / Doctor in Mansion
Acting
Myrna Loy
Queen Morgan le Fay / Evil Sister in Mansion
Acting
Mitchell Harris
Sagramor / Butler in Mansion
Acting
Stanley Blystone
King's Knight (uncredited)
Acting
Heinie Conklin
Sneezing Man at Radio Station (uncredited)
Acting
Louise Emmons
Old Hag in Dungeon (uncredited)
Acting