The DDD agent works for the Doppleganger Detection Department, helping keep the world safe from the shapeshifting, human eating dopplegangers. The agent shows up every day to give the doorman a list of the neighbors that have left the building, and come to clean up the dopplegangers that are reported. The agent is kind and very worried about the mental health of the doorman, encouraging them to sleep well and talk to a therapist. They are also friendly and warm to the doorman.