Colin Kilgannon was a member of The Blacklist.
Colin Kilgannon was the son of the international smuggler Arthur Kilgannon, known in the criminal underworld as “The Irishman”. Along with his father, Colin smuggled substances, objects, and people all over the world, working under the cover of being consultants for the shipping industry. The Kilgannon family operated from Bulgaria, where they developed powerful political allies. After the fall of Raymond Reddington's syndicate due to Kathryn Nemec's actions, the Kilgannons took over his human smuggling operation and seized Reddington's routes. At the same time, Colin took over the family's smuggling operation from his father, becoming the leader of the Kilgannon organization. However, Colin proved to be far more ruthless than Arthur and ran the smuggling business on inhuman terms, transporting his clients in overcrowded cargo ships.
He strangled his father to death after he planned to remove him from the smuggling business. When Red called and threatened to execute his mother if he didn't meet his demands, he bluntly retorted that he didn't care for her at all and was planning to kill her himself. However, his mother was listening in on the conversation and gave Red Colin's exact location. Colin was getting rid of the evidence against him when Red arrived and killed his men. After Red took Colin's evidence, he shot him twice.