Frederick Kovert (sometimes written Ko Vert or KoVert) was an American female impersonator. Kovert appeared in drag in a number of comic roles in silent films of the 1920s. His first film role was in the 1920 film An Adventuress, alongside Julian Eltinge, then the best-known female impersonator in the entertainment world. Kovert appeared in the 1925 The Wizard of Oz, a silent film adaptation of L. Frank Baum's The Wonderful Wizard of Oz, and also designed the film's costumes.[1]