Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | The NeverEnding Story | 1984 | |
| Writer | The NeverEnding Story II: The Next Chapter | 1990 | |
| Writer | The NeverEnding Story III | 1994 | |
| Writer | Momo | 2001 | |
| Writer | Jim Knopf und Lukas der Lokomotivführer | 2018 | |
| Writer | Tales from the Neverending Story: The Beginning | 2001 | |
| Actor | Momo | 1986 | Man in Train (uncredited) |
| Writer | Momo | 1986 | |
| Writer | Tales from the Neverending Story: Resurrection | 2004 | |
| Writer | Augsburger Puppenkiste - Jim Knopf und die Wilde 13 | 1977 |