Beware of the Robot ("Kaitei no Gaadoman", lit. "The Ocean Floor's Guardman") is the 6th episode of the General Blue Saga in the Dragon Ball series. The episode first aired on February 18, 1987.
Goku and Krillin start their battle with the Pirate Robot. General Blue watches from the hallway. Goku and Krillin just throw normal punches and kicks when Krillin gets punched in the face. Krillin watches with Bulma while Goku fights alone. Goku throws a lot of headbutts at the Pirate Robot's chin. The Pirate Robot the shoots out bullets. Goku retreats to higher grounds and just runs away. The Pirate Robot glides on the water to shoot Goku. Goku manages to make the robot bang into walls but still can't win. Krillin and Bulma find a machine that shoots out missiles. They shoot one at the Pirate Robot but it hits Goku. The missile makes the ceiling fall on Goku which makes the floor he was on break. The Pirate Robot decided to chase Bulma and Krillin and none of the other missiles hit it.
While they ran, General Blue stayed in the hallway. The robot shoots bullets as they go up the stairs. Bulma and Krillin find a hallway and go in a room. Meanwhile, Goku gets up. General Blue stays and is amazed. In the room, there is a computer room. The Pirate Robot finds them and so does Goku (he uses the Power Pole to get to the window). Goku uses his Power Pole to bring Krillin and Bulma down. The robot is amazed. While they run away, the robot went down the stairs. When the Pirate Robot gets down the stairs, Goku does an aerial attack, killing it. Krillin and Bulma run past a door General Blue was behind. General Blue follows them and makes a fake arrow so Goku will go the wrong way. Goku runs there and makes the wrong turn. Krillin and Bulma find a well and they go in. General Blue follows and Goku continues going the wrong way.