A Grim Reaper-themed robot with a scythe blade in place of a left hand. A scientist was delivering a message to Ryan concerning Tyler Steele. Skullbot and the Skugs intercepted the message, replaced the scientist with a robotic double, and set up a fake briefcase filled with explosives. Before his second battle Zelton implanted him with an explosive device. Once the Troopers discovered the fake briefcase, they saved the real scientist and Ryan defeated Skullbot by hitting him where the bomb was triggering it. Skullbot fits the category of Zelton's army.
- In footage from Metalder, Skullbot's Japanese equivalent was defeated when Metalder severed his arm and threw it at him which hit him in his torso triggering the bomb.