DNAgent

DNAgent is a quest perk in the Fallout: New Vegas add-on Old World Blues.

Location
Complete the Dog Run I, Dog Gone II, Who let the... III, and Snake Skins challenges as part of the quest, X-8 Data Retrieval Test.

Effects
You gain +10% damage to night stalkers.

Behind the Scenes

 * The name of this perk could be a reference to Eclipse Comics' 1983 series The DNAgents by Mark Evanier and Will Meugniot.