Lance Corporal Stats: 192cm, 81kg Kind and polite, but he cries if Keroro forgets him. Former member of the X-1 unit. Assassin. The type whose personality flips completely when he gets behind a steering wheel. He has strange feelings for Guest... Childhood friends with Keroro and Giroro. Wears a mask. (He once took it off because someone asked, but everyone missed the moment, so no one has ever seen his face.) Uses archaic speech (Hao-style: -hao, -io, -soida, -soikka). Has zero presence.

Sergeant Childhood friends with Giroro and Dororo. Stats: 172cm, 65kg Unintentionally bullies Dororo, but considers him a dear friend and cherishes him. As a Sergeant, he speaks informally to everyone. Lives at Natsumi and Fuyuki's house; he calls them 'Lady Natsumi' and 'Master Fuyuki.'

Corporal Stats: 184cm, 79kg Childhood friends with Keroro and Dororo. Indifferent but a tsundere. Has a cold, cat-like gaze. Finds Keroro pathetic for slacking off on the Pekopon invasion. Obsessively diligent. Speaks informally. Human partner: Natsumi Hinata