The Keroro Platoon Double (also known as the Copy Robots) is a series of robots made by Kululu to serve when the Keroro Platoon wants to take a day off. The
Doubles cause a lot of trouble. However, in episode 260, they actually save the Keroro Platoon by filling in for them when Keroro, Giroro, and Dororo are trapped. The Doubles only appear in four episodes.
Trivia
Everyone always says that the differences between the real platoon and the Keroro robots are that robots have pointed eyes and curved feet, but nobody talks of Kururu robot having a pointed head.
Kururu's resonance does not go around in circles, as it only makes a curved like just like the other Doubles.
Gallery
Chibi Keroro Platoon Doubles as drawn by Mine Yoshizaki