The reapers is just another idea or name for the personification of Death. The problem with real life facts is that you have to be dead to meet them/it, which makes getting first hand accounts rather difficult. In some cultures Death is seen as the actual cause of death, while in others he is merely a psychopomp(a guide to the afterlife). You could of course try and conatct the spirit of a deceased person and ask them about it, but I have never heard of any successful attempts to get information from the dead on this matter. I wish you the best with your search for information.