Ensign Darren is an NPC in Unturned 3 who is a communications operator on the Liberator. He is also a member of a bandit gang smuggling goods from the Liberator. He can be found on the bridge near the stairs going up.
In the The Conspiracy's Conclusion quest, you must go to Silo 22 in order to find radio logs indicating who the traitor is. When the quest is completed, Ensign Darren will be in the jail cell along with T.Rickster.