- Sybille Schmitz
- Dr. Virginia Larsen
- Albrecht Schoenhals
- Dr. Dos Passos
- Rudolf Fernau
- Dr. Jack Bennett
- Hermann Speelmans
- Will Rubber Journalist
- Heinz Salfner
- Gouverneur Parker
- Alexander Engel
- Prof.Forster
- Karl Günther
- Kaufmann Sedgewick
- Fritz Odemar
- Prof.Freemann
- Harry Hardt
- Major Seegrave
- Karl-Heinz Peters
- Dr. Gomes
