Actor Al Mulock (featured as Knuckles in the opening train sequence, as well as in Leone's The Good, the Bad and the Ugly) committed suicide during shooting of the film by leaping from his Guadix hotel room in full costume.
Skuespilleren Al Mulock (som optræder i den indledende scene og i Leones Den gode, den onde og den grusomme) begik selvmord under indspilningen af filmen ved at springe ud fra sit hotelværelse i fuldt kostume.