Otomo was a model of android created by the Kanemitsu Corporation in RoboCop 3. Three such androids (all portrayed by Bruce Locke) appeared in the film, sent by Kanemitsu to ensure that Omni Consumer Products could carry out their construction of Delta City by demolishing Old Detroit. They did this by hunting down rebels opposing OCP's Rehab forces and were also tasked with destroying RoboCop when he sided with the rebels.
After the Rehabs had cleared out the rebel hideout in Cadillac Heights, one Otomo remained there lying in wait for RoboCop. When the cyborg enforcer arrived, Otomo attacked him, severing his arm with its sword. As the Otomo prepared to strike again, RoboCop reached for his gun-arm attachment and equipped it. The Otomo lifted its sword to strike as RoboCop fired a missile, taking the Otomo's head off. Its headless body swung its sword and fell to the ground.
Later, RoboCop flew into the OCP tower with his flightpack to find Paul McDaggett waiting for him. Two other Otomo androids confronted RoboCop and nearly managed to defeat him until Nikko Halloran succeeded in reprogramming them, forcing them to decapitate each other. This, however, triggered the self-destruct in both units. RoboCop reignited his flightpack, the discharge of flame hitting McDaggett's leg and rendering him immobile, and escaped with Nikko and Lazarus, while McDaggett perishes in the blast from the downed Otomo.