Mike Tyson-double left jab, nobody threw it quite like him, so its "signature". Evander Holyfield-flurry, no HW in his time or now (which is not his time) punches like he did.Holyfield's HW flurries were reminiscent of Joe Walcott and Rocky Marciano in terms of fluidity and ferocity, in that way his flurry was signature. Mirko Cro Cop-left high kick to the head-truly signature