Ultron Sentries
Robotic soldiers developed from Hydra's Scepter experiments in Sokovia and rebuilt in vast numbers as Ultron's personal army, each unit a lighter copy of his own design that his consciousness can pilot directly.
Ultron Sentries, also called Sub-Ultrons, are mass-produced robotic soldiers that serve as Ultron's personal army. They originate in research conducted by Baron Wolfgang von Strucker's Hydra cell in Sokovia, where study of the Scepter opened the door to advanced artificial intelligence and a series of experimental robot bodies. Rebuilt and multiplied in large numbers, the drones share Ultron's general design in a lighter, less armored frame, with a blue glow behind the faceplate that turns red whenever his consciousness takes direct control of a unit. Each Sentry can transform its forearms into plasma cannons and flies on back and leg thrusters, letting the swarm fight in the air as well as on the ground.
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