Mattei continued work as a director primarily in the Philippines until his death in 2007, just before he was to enter production on his fifth Zombie film.
"[6][full citation needed] In 1980, Mattei began collaborating with screenwriter Claudio Fragasso, beginning with The True Story of the Nun of Monza (1980) and ending with a comedy called Three For One (1990).
[3] The two worked closely together for that ten-year period (collaborating on 15 films),[3] with Fragasso occasionally assuming the role of second unit director.
[7] Principal photography was scheduled to begin May 1982 in Rome, Italy while The Hollywood Reporter naming Fragasso as screenwriter, and Ennio Morricone as music composer and conductor.
[7] The Hollywood Reporter later stated that principal photography on Hercules began in August 1982 in Italy under the direction of Luigi Cozzi.
"[12] Daniel Budnik, an author of a book on 1980s action films, described Mattei as "no stranger to simply ripping stuff off", noting his use of Goblin's music for Hell of the Living Dead, stock footage from documentaries on South African tribes, and shark attack footage for his Cruel Jaws, ultimately describing him as "the best of all possible rip-off artists [...] Bruno just really did his own thing and went his own way" which involved "ripping everyone off, but you can't have everything".
[16] Mattei used several aliases throughout his career, including Jordan B. Matthews, Jimmy Matheus, Gilbert Roussel, Axel Berger, Michael Cardoso, David Hunt, Werner Knox, Pierre Le Blanc, Stefan Oblowsky, and most famously Vincent Dawn.