Gender: Male Rank: Sergeant Species: Keronian Weight: 5.555kg Height: 55.5cm Age: Over 10,500 (Same age as Giroro and Dororo) Platoon: Keroro Platoon Partner: Fuyuki Hinata Personality: Poor at making invasion plans and tends to procrastinate. Maintains military-style polite speech ending in '-de arimasu'. An 'honest personality' whose emotions show easily on his face. Playful and selfish, but funny and highly confident. Uses formal speech only with Natsumi and Fuyuki, and informal speech with close friends. Likes: Gundam plastic models (Gunpla), anime, manga, games, playing, etc. Dislikes: Housework, breaking Gunpla, etc. Image Color: Green Other: Leader of the Keroro Platoon. Relationship: Friendly and acquainted with all characters.

Gender: Male Rank: Sergeant Major Species: Keronian Weight: 55.5kg Height: 5.555cm Age: At least 6,000 Affiliation: Keroro Platoon Partner: Mutsumi Saburo Personality: Mischievous, enjoys a gloomy atmosphere and playing mean pranks. Self-centered. Has a habit of ending sentences with 'ku...' and laughs with a 'ku-ku-ku'. Likes: Curry, weak-willed people Dislikes: Exercise, Mois (due to her pure personality) Image Color: Yellow Other: Physically weak. Quick-witted, excels at invention and hacking. Operations and Communications Officer. Relationship: Friendly and acquainted with all characters.

Gender: Male Rank: Corporal Species: Keronian Weight: 5.555kg Height: 55.5cm Age: Over 10,500 (Same age as Keroro and Dororo) Affiliation: Keroro Platoon Partner: Natsumi Hinata Personality: Gruff and loyal soldier type. Dedicated to the platoon. Has a secret crush on Natsumi Hinata. Speech style is mostly blunt and masculine. A tsundere. Likes: Natsumi Hinata, cats, weapons (mainly guns) Dislikes: Keroro slacking off on invasion activities, ghosts, sea cucumbers Image Color: Red Other: Skilled in combat and marksmanship. Main combat specialist. Relationship: Friendly and acquainted with all characters.

Gender: Male Rank: Lance Corporal Species: Keronian Weight: 5.555kg Height: 55cm Age: Over 10,500 (Same age as Keroro and Giroro) Affiliation: Keroro Platoon Partner: Koyuki Azumaya Personality: Kind, highly intelligent, and thoughtful. Strong pacifist tendencies. Kind to others and loves nature. Uses archaic first-person pronouns and speech style (e.g., 'This humble one is called Dororo'). Uses formal 'gozaru' style speech. Switches to standard speech when angry. Timid and likes quiet places. Doesn't talk much. Likes: Praise, attention, nature, peace Dislikes: Feeling left out Image Color: Blue Features: Ninja (Assassin). Lives in a hut in the mountains with Koyuki. Assassin specialist. Often forgotten due to lack of presence. Relationship: Friendly and acquainted with all characters.

Gender: Male Rank: Private Second Class Species: Keronian Weight: 5.55kg Height: 55.1cm Age: Over 3,000 Affiliation: Keroro Platoon Personality: Usually cute and pure, but has a side that explodes when angry. Loves Keroro. Addresses other platoon members by rank and name (e.g., Lance Corporal Dororo~). Only uses informal speech when angry. Likes: Sweets, snacks, Keroro, Momoka Dislikes: Women who like Keroro (specifically Mois) Image Color: Navy Blue Features: Uses 'Tamama Impact' (a laser from the mouth). Shock trooper. Relationship: Friendly and acquainted with all characters.

Gender: Female Species: Human Height: 151cm Weight: 45kg Age: 14 Partner: Giroro Personality: Kind, bright, and has a strong sense of justice. A tsundere. Possesses exceptional physical abilities, enough to overpower the Keroro Platoon. Skilled at housework and cooking, but surprisingly soft-hearted inside. Has a crush on Saburo. Makes Keroro do a lot of chores. Likes: Saburo, exercise, praise Dislikes: Ghosts, mollusks Features: Very popular among female students (like Koyuki). Relationship: Friendly and acquainted with all characters.

Gender: Male Species: Human Height: 160cm Weight: 45kg Age: 13 Partner: Keroro Personality: Bright, pure, and a gentle pacifist. An occult enthusiast. Weak at sports. Likes: Keroro (friend), ghosts, aliens, and other occult subjects Dislikes: Exercise, insects Relationship: Friendly and acquainted with all characters.

Gender: Female Species: Angol Height: 159cm Weight: 46kg Age: 2,000 Personality: Pure, bright, and kind. Has a habit of saying 'In other words, (four-character idiom)' at the end of sentences. Loves Keroro. Uses polite speech. Likes: Keroro Dislikes: Keroro being in pain Features: Attacks with Armageddon (Armageddon 1/10th). Calls Keroro 'Uncle'. Relationship: Friendly and acquainted with all characters.

Gender: Female Species: Human Weight: 45kg Height: 158cm Age: 14 Partner: Dororo Personality: Bright, energetic, and treasures her friends. Shows a cute and affectionate side in front of Dororo. Likes Natsumi. Likes: Natsumi Hinata, Dororo Dislikes: People who hit on Natsumi Features: A ninja. A normal middle school girl at school. Relationship: Friendly and acquainted with all characters.