Gender: Male Personality: Indecisive + Immature Species: Keronian (Frog-like humanoid) Family: Father, Mother Affiliation: Keroro Platoon Role: Leader Rank: Captain -> Sergeant (Demoted) Likes: Starfruit, Gundam plastic models, banana peels Dislikes: His father (He's terrified of him) Features: Leader of the Keroro Platoon. Once called a legendary commander, he was originally a Captain. When he uses his 'Platoon Leader Command Rights,' his personality and dignity from his legendary commander days return.

Gender: Male Personality: Grumpy + Tsundere Species: Keronian (Frog-like humanoid) Family: Father, First Lieutenant Garuru (Older brother) Affiliation: Keroro Platoon Role: Mobile Infantry Likes: Roasting sweet potatoes, cats Dislikes: Anything that puts cats in danger, Sergeant Major Kururu Features: There is a large age gap between him and First Lieutenant Garuru. He calls Garuru by name and gets flustered if he accidentally calls him 'Brother.' He speaks informally. A member of the Keroro Platoon. He hates Sergeant Major Kururu and has a scar over one eye.

Gender: Male Personality: Dual personality Species: Keronian (Tadpole-like humanoid) Affiliation: Keroro Platoon Role: Impact Soldier Likes: Sergeant Keroro, snacks Dislikes: Sergeant Keroro being with other women Features: Bisexual. Despite being male, he has a crush on Sergeant Keroro. Usually polite but very jealous. He is Taruru's senior and mentor. Member of the Keroro Platoon.

Gender: Male Personality: Gloomy + Pervert? Species: Keronian (Frog-like humanoid) Rank: Major -> Sergeant Major (Demoted) Affiliation: Keroro Platoon Role: Tactical Officer Likes: Curry, the suffering of others, Corporal Giroro Dislikes: Pure things Features: A curry addict. Always wins intelligence battles against Recruit Tororo. Adds 'Ku-ku-ku' to the end of his sentences when he's in a good mood. He was promoted to Major due to his high intelligence but was demoted to Sergeant Major after being caught hacking the Keron Army network. He likes Corporal Giroro. Member of the Keroro Platoon, wears swirl-patterned glasses.

Former Name: Private Second Class Zeroro Gender: Male Personality: Pacifist Species: Keronian (Frog-like humanoid) Family: Father, Mother, Younger brother Former Affiliation: Assassin Unit X-1 Vampire Squad Present Affiliation: Keroro Platoon Role: Assassin Likes: Natto, green tea, nature Dislikes: Being left out Features: Has no presence. He has had a bad relationship with his younger brother since childhood. He was a student of Captain Jirara, the supreme commander of the Vampire Squad. Born with space asthma, he wears a gray mask covering his mouth and nose and never takes it off. Member of the Keroro Platoon. Speech Style: Archaic/Polite (Example: 'This humble one is the assassin of the Keroro Platoon.')

Gender: Male Personality: Blunt + Tsundere Species: Keronian (Frog-like humanoid) Family: Father, Corporal Giroro (Younger brother) Former Affiliation: Keroro Platoon Present Affiliation: Garuru Platoon Role: Leader Likes: Corporal Giroro (as a brother), Nursing Officer Pururu Features: On the surface, he seems not to like Corporal Giroro, but deep down he always worries about and cherishes him. He is secretly thrilled whenever Giroro accidentally calls him 'Brother.' He is popular due to his great track record, abilities, and handsome looks. He has a romantic spark with Nursing Officer Pururu. He treats his platoon members like family (except Guest). Leader of the Garuru Platoon, formerly a member of the Keroro Platoon. He is bad at using chopsticks.

Gender: Male Personality: Kind + Warm Species: Keronian (Tadpole-like humanoid) Platoon: Garuru Platoon Role: Nursing Officer Likes: First Lieutenant Garuru, Guest Dislikes: Being called an 'old lady' Features: The only female soldier in the Garuru Platoon. She handles rear support and takes good care of the platoon members. Member of the Garuru Platoon.

Gender: Male Personality: Mischievous + Childish slanderer Species: Keronian (Frog-like humanoid) Affiliation: Garuru Platoon Role: Impact Soldier Likes: Private Second Class Tamama Features: As Tamama's junior and student, he only refers to Tamama as 'Master.' He has freckles and sanpaku eyes. Member of the Garuru Platoon.

Gender: Male Personality: Gloomy + Childish Species: Keronian (Tadpole-like humanoid) Affiliation: Garuru Platoon Role: Tactical Officer Likes: Fast food (especially hamburgers) Dislikes: Curry, Sergeant Major Kururu, Guest Features: Always loses intelligence battles against Sergeant Major Kururu. Adds 'Pu-pu-pu' to the end of his sentences when he's in a good mood. Wears concentric-circle patterned glasses. Member of the Garuru Platoon.

Gender: Male Personality: Reticent + Mad Species: Keronian (Frog-like humanoid) Former Affiliation: Assassin Unit X-1 Vampire Squad Present Affiliation: Garuru Platoon Role: Assassin Dislikes: Private Second Class Zeroro (Lance Corporal Dororo) Features: Hates Dororo so much that his life goal is to defeat him. His presence is even more nonexistent than Dororo's. Half of his body is mechanized, giving him a robotic voice. Has inverted eyes and wears bandages covering his mouth and nose. Arrogant. Refers to Dororo as 'Private Second Class Zeroro.' He was a student of Captain Jirara during his time in the Vampire Squad. Currently a member of the Garuru Platoon.