| Otto - Der Liebesfilm (1992) (AKA "Otto - The Romance Film") | (Not seen) |
| Otto - Der Außerfriesische (1989) (AKA "Otto - The Alien from East Frisia") | (Not seen) |
| Otto - Der Neue Film (1987) (AKA "Otto - The New Movie") | (Not seen) |
| Holly - The Movie (1984) (AKA "Otto - The Movie") | (Not seen) |