Dark Diligence Drone
Dark Diligence Drones are Diligence Class Drones possessed by the Ing. Like Diligence drones, they attack with energy beams but at a much higher rate preventing Samus from using the Morph Ball to roll underneath them. They also are more durable than Diligence Drones; only a charged blast from the Light Beam or Annihilator Beam can destroy them. Samus encounters them in the Ing Hive.
- "Some Diligence drones have been taken by the Ing for possession duties. Their small size and durability makes them excellent scouts, able to go where most others cannot. A Dark Diligence still relies on focused energy beams for defense. Their construct nature makes them invulnerable to most attack. A high-powered burst of light energy can disrupt a Dark Diligence unit." — Logbook "Dark Diligence Drone" (Metroid Prime 2: Echoes)