The only piece of biographical information I've been able to find about him is small piece in Radiocorriere TV magazine from 1979, stating that he is German and that he has worked with Fellini. The team at the Cinema Italiano Database have also discovered that his real name was most likely Horst Detlev Weinert as he is credited under different variations of this name in a few films.
There are probably many more uncredited roles to be found for Mike, especially during the 1980s as there's currently a pretty large gap in his filmography between 1984 and 1990.
- Una su 13 .... Barber customer (uncredited)
1971 - Scipione detto anche l'Africano .... One of Scipione's friends (credited as "Weinert Detley Horst")
1972 - Girolimoni, il mostro di Roma .... The German priest (uncredited)
1973 - Storie scellerate .... Cardinal (uncredited)
1974 - Carambola .... Bookmaker (credited)
1976 - Il comune senso del pudore .... Hotel manager (credited as "Horst Weinert")
1977 - La svastica nel ventre .... Herr Gruppenführer (credited)
- Le lunghe notti della Gestapo .... General von Guderwal (credited)
1978 - Battaglie negli spazi stellari .... Charles Sotus (credited as "Detlev Weinert")
- Indagine su un delitto perfetto .... Sir Arthur's doctor (uncredited)
- Interno di un convento .... The Cardinal's aide (credited)
- Lo chiamavano Bulldozer .... Cashier at gambling joint (credited)
- Quel maledetto treno blindato .... Colonel Hauser (credited)
1980 - Contamination .... Dr. Hilton (uncredited)
- L'avvertimento .... Giorgio Massimiliano (credited)
- Panagulis vive (TV mini-series) .... Georgios Papadopoulos (credited)
1981 - La nouvelle malle des Indes (TV mini-series, part 2) .... Governor of Austria (credited as "M. Morriss")
- Priest of Love .... Dr. Uhlfelder (credited)
- Ricominciamo a tre .... Doctor (uncredited)
1982 - La Certosa di Parma (TV mini-series) - ep. 1 .... Kommandant Binder (credited)
- Sturmtruppen 2 .... Officer (credited)
1983 - Notturno .... Zukarnof (credited)
1984 - ...e la vita continua (TV mini-series) - ep. 5 .... Duvivier (credited)
1990 - Il giudice istruttore (TV series) - ep. 3: "Complotto internazionale" .... Wolf (credited)
- La linea del fiume (1976) .... German in the café
- Quasi quasi mi sposo (TV movie, 1982)