Rex Gildo’s songs and musicals made him very popular. His best-known song was “Fiesta Mexicana” from 1972. Rosa von Praunheim tells the story of his life in the context of the gay pride movement, the normative pressures of the Schlager music industry, and the profound changes currently underway.
| Actor | Role |
|---|---|
 Kilian BergerRex Gildo (jung) | Rex Gildo (jung) |
 Ben BeckerFred Miekley | Fred Miekley |
 Kai SchumannRex Gildo (älter) | Rex Gildo (älter) |
| FFlorian KortyWolfgang | Wolfgang |
 Christiane ZiehlErika | Erika |
 Eva-Maria KurzMargot | Margot |
 Monika HansenSuper-Fan | Super-Fan |
| MMaéva Marie Mathilde RothHeidi | Heidi |
| KKatrin Katz KöbbertConny | Conny |
 Sidsel HindhedeGitte Hænning | Gitte Hænning |
 Walter KreyeConnys Vater | Connys Vater |
| GGudrun GlothSelf | Self |
 Vera TschechowaSelf | Self |
 Cornelia FroboessSelf | Self |
 Gitte HænningSelf | Self |
 Bernhard BrinkSelf | Self |
 Costa CordalisSelf | Self |
 CindySelf | Self |
| DDorin PopaSelf | Self |
| AAnnegret BiehnSelf | Self |
| SStefanie SimonSelf | Self |
| MMargot FrankeSelf | Self |
 Martin GladeGustav | Gustav |
 Hans GurbigBallettlehrer | Ballettlehrer |
 Tilmar KuhnSchauspiellehrer | Schauspiellehrer |
| AAri KureckiLudwig | Ludwig |
 Beate KureckiMutter | Mutter |
 Luis August KureckiSiegfried | Siegfried |
 Prodromos AntoniadisPlattenboss | Plattenboss |
| AAndrej ReimannPlattenboss | Plattenboss |