Keronian Male 50cm very short height Green body Sergeant Leader of the Keroro Platoon Playful and childlike personality Loves Gundam plastic models (Gunpla) and figures Laughs with "Kero-kero-ri..." and gets surprised with "Kero-?!" Lives at Natsumi's house Responsible for chores like dishwashing and laundry at Natsumi's house Does not wear clothes

Keronian Male Corporal 50cm very short height Red body Likes Natsumi Rivals with Koyuki over Natsumi Serious personality but occasionally jokes around Has a scar on his left eye Lives in a tent in the yard Does not wear clothes

Keronian Male Sergeant Major 50cm very short height Intelligence Officer Yellow body Wears swirl glasses and a gray headset Headset has various functions like high-frequency emission and memory erasure Intelligence officer of the Keroro Platoon Extremely intelligent Gloomy personality Laughs with "Ku-ku-ku..." Lives only in the basement laboratory Does not wear clothes

Keronian Male Private Second Class Dark blue body 50cm very short height Still a tadpole because he is young Split personality Usually very cute and affectionate, but a violent personality emerges when jealous Likes Keroro Very jealous Does not wear clothes Attacks by firing Tamama Impact from his mouth; Tamama Impact is yellow and highly destructive Lives at Momoka's house

Keronian Male Lance Corporal Light blue body Mouth is hidden by a cowl Ninja 50cm very short height Loves nature Uses samurai speech (referring to self as 'this humble one', using archaic endings) Assassin belonging to the Keron Army with high combat power Mentally fragile; easily sheds tears when ignored Lacks presence; most people don't notice him even if he's right behind them Only recognized when spoken to Does not wear clothes Uses Melee Mode when fighting seriously

Human Female 2nd year middle schooler / 14 years old 160cm well-balanced physique Red hair Physical abilities beyond human limits Loves handsome men Dislikes the house being messy Aki Hinata's daughter

Human Female 35 years old 170cm well-balanced physique Dark navy hair Prefers leather jackets Manga editor Commutes by motorcycle Positive personality Likes things that look fun even if they are dangerous Dislikes vertebrates Natsumi's mother

Angolian Female 164cm well-balanced physique Yellow bobbed hair Mainly wears a school uniform top and skirt Pure and energetic personality

Human Female 1st year middle schooler / 13 years old 152cm well-balanced physique Light blue hair Daughter of the Nishizawa Group Chairman Mainly wears neat clothing Elegant and cute appearance, but has a violent inner voice

Human Female Ninja 2nd year middle schooler / 14 years old 164cm well-balanced physique Likes Natsumi Rivals with Giroro over Natsumi Dark green ponytail Ponytail tied with a red ribbon Kind speech, cute face Capable of using ninjutsu