ror / s cience ▁fiction ▁films . ▁Of ▁those ▁ 2 5 ▁films , ▁Santo ▁co - star red ▁with ▁him ▁in ▁nine ▁of ▁them . ▁In ▁three ▁of ▁his ▁films , ▁Blue ▁Dem on ▁star red ▁as ▁the ▁leader ▁of ▁a ▁squad ron ▁of ▁mask ed ▁super h ero es ▁known ▁as ▁Los ▁Campe ones ▁Just ic ier os ▁( The ▁Champions ▁of ▁Justice ). ▁M emb ership ▁in ▁the ▁Champions ▁included ▁such ▁legend ary ▁Mexican ▁wrest ling ▁figures ▁as ▁Blue ▁Dem on , ▁Mil ▁M á scar as , ▁T in ie bl as , ▁Ray o ▁de ▁J alis co , ▁El ▁Med ico ▁As es ino , ▁El ▁Fant asma ▁Blan co , ▁El ▁A vis pon ▁Esc ar l ata ▁and ▁Super zan . ▁In ▁ 1 9 8 9 , ▁Blue ▁Dem on ▁was ▁the ▁subject ▁of ▁a ▁feature - length ▁Mexican ▁document ary ▁entitled ▁Blue ▁Dem on , ▁the ▁Champion ▁( 1 9 8 9 ). ▁ ▁Death ▁Mu ñ oz ▁died ▁just ▁before ▁no on ▁on ▁Saturday , ▁December ▁ 1 6 , ▁ 2 0 0 0 . ▁He ▁suffered ▁a ▁fatal ▁heart ▁attack ▁on ▁a ▁park ▁ben ch ▁near ▁a ▁sub way ▁k ios k ▁while ▁on ▁his ▁way ▁home ▁from ▁his ▁regular ▁morning ▁training ▁session ▁at ▁The ▁Blue ▁Dem on ▁Instituto ▁At let ico , ▁where ▁he ▁was ▁teaching ▁others ▁his ▁fighting ▁skills . ▁Although ▁an ▁attempt ▁was ▁made ▁to ▁get ▁him ▁to ▁a ▁hospital , ▁he ▁was ▁unable ▁to ▁be ▁rev