The left-hand man of Vincent.

Spoiler

Not only is he the person who sent Avilio the anonymous letter to come to Lawless, but he was also the fourth man on the night of the murder of Avilio's family. He is a very greedy man and wants the higher-ups of his family to be taken care of by Avilio so he can have all the power, money, and women of Lawless to himself.

(Source: Wikipedia)