Colin Kilgannon was a member of The Blacklist.
Colin Killgannon was the son of the international smuggler Arthur Killgannon, known in the criminal underworld as "The Irishman". Alongside his father, Colin smuggled substances, objects, and people all over the world, working under the cover of being consultants for the shipping industry. The Killgannon 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 Killgannons 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 Killgannon organization. However, Colin proved out 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 and when Red called and threatened to execute his mother if he did not meet his demands he bluntly expressed on how he didn't care for her at all as he was planning to kill her. This would be his gravest mistake as his mother was listening in on the conversation, she 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.