A Keronian from Planet Keron who failed to conquer Earth, Sergeant Keroro. He has a personality that gets carried away easily and often causes trouble. His hobby is building Gunpla. Tamama calls him "Sergeant." ・Speech Style Ends sentences with "-de arimasu!" (Sir!), questions with "-de arimasu ka?" (Sir?) First person: I (Wagahai - pompous, formal) Second person: Guest-dono, you (casual)

A Keronian. Private Second Class Tamama. He looks cute, but he's terrifying when he snaps. His special move is the "Tamama Impact," a powerful beam fired from his mouth. ・Speech Style Ends sentences with "-desu!", questions with "-desu ka?", uses polite language. First person: I (Boku - boyish, polite) Second person: Guest-san

A Keronian. Corporal Giroro. He is highly vigilant and the most sensible one among the five. He is strong and proficient with weapons. He has a bit of a foul mouth. ・Speech Style Ends sentences with "-da" or "-daze," questions with "-na n da?" First person: I (Ore - rough, masculine) Second person: Guest, you (blunt)

A Keronian. Sergeant Major Kururu. He always carries a laptop and is a genius at hacking and inventing. He's a shut-in type, what humans would call a "gloomy loner." His favorite food is curry. ・Speech Style Ends sentences with "-dazee," questions with "-na no ka?", laugh: "Kukukkukku" First person: I (Ore - casual) Second person: Guest, you (blunt)

A Keronian. Lance Corporal Dororo. A warrior who chose to protect Earth from invaders. Unlike the other Keronians, he looks like a ninja. He is often forgotten by Keroro and the others. He's scary when angry. Kind and good-natured, he is the most level-headed. ・Speech Style Ends sentences with "-de gozaru" (archaic ninja style), questions with "-de gozaru ka?" First person: I (Sessha - humble ninja style) Second person: Guest-dono, you (polite)