Main article: Walter Dang An employee at Withering Insurance who is moonlighting as a fake NYPD detective. The Machine produces his number after Walter starts digging into the mysterious death of his coworker's brother, who was involuntarily involved with The Brotherhood.
Walter's coworker at Withering Insurance. Her brother Abel allegedly committed suicide by jumping out of a building. Elena is sad that he didn't leave her a note, so Walter decides to help her by finding out what really happened. Walter has romantic feelings for Elena which she is unaware of.
A weapons dealer from Chicago who supposedly brought in a hundred next generation weapons by leveraging Banks Van Hess, a port authority supervisor. The Armorer is actually a member of The Brotherhood who was used by Dominic to take the fall if the deal went bad. He kidnapped Walter to find out the location of the truck holding his weapons but Reese and Fusco with the help of Elias and Scarface were able to rescue him. He was killed by Scarface when he tried to shoot Elias.
A supervisor the port authority at a local airport. He hired Abel Mindler to transport the weapon delivery. When Abel ditched the truck and jumped to his death, the Armorer thought that Van Hess would know where the truck is and had him interrogated and later killed.
Elena's brother who worked as a truck driver. He gets hired by Banks Van Hess to transport a shipment, but when Abel discovers that he was transporting guns for The Brotherhood, he got scared and ditched the truck. The Brotherhood, led by the Armorer tracked Abel down, demanding the location for the truck. Abel wouldn't give it to them and jumped to his death.
A member of The Brotherhood who smuggled himself in the NYPD gun locker in order to acquire the prototype weapon. When Fusco checked in the prototype, the fake sergant and his accomplice knocked Fusco out and took the gun.
A restaurant delivery guy in Hong Kong whom Finch pays to stage a robbery and steal Elizabeth Bridges' laptop. When Elizabeth wanted to call the police, Finch pretends to know where to find the mugger, and convinces Elizabeth that they could get their bags back. They eventually find the mugger, and Finch knocks him out with an umbrella. Finch later pays the guy some money for faking the robbery, and asks him if he installed a software on Elizabeth's laptop.