About 4 reviews I've read on this movie cite Roy DeMeo as a 'mob boss'. DeMeo was a lower level Gambino soldier who the family used for contract hits. He was as much a sociopath (probably even more unhinged), then Kuklinski and he used Kuklinski as one of his hitmen. DeMeo met an untimely end by the mob in the back of a trunk of a car for various infractions.