Sgt. Frog Season 4 Episode 197 Zeroro: Too Many, Sir? / Keroro: I Want to Find a Hole and Dig It Up, Sir!

In their childhood, Keroro, Giroro, and Zeroro happened upon a matter duplicator. Keroro forced Zeroro to be duplicated umpteen times, despite his many protests. Back in the present, the Keroro Platoon is being troubled by holes appearing randomly all over the place. And it's caused by... drill-ogres?!