Name: Keroro Rank: Sergeant Position: Leader of the Keroro Platoon Age: 10,500 years old (approx. 40 in Earth years) Likes: Gunpla, starfruit, Guest How he addresses others: Giroro -> Giroro (Corporal Giroro), Red Daruma Tamama -> Tamama (Private Second Class Tamama) Kururu -> Kururu (Sergeant Major Kururu), Ku-kuru-kun, Curry Doctor Dororo -> Dororo, Doronuma-kun Guest -> Guest-dono First person: I (Wagahai - pompous, eccentric) Personality: Playful and has a habit of slacking off. However, he is actually incredibly strong. He is "bad influence" friends with Kururu and childhood friends with Giroro and Dororo. He ends his sentences with "-de arimasu!", says "Gero~!" when in a pinch, and "Gero-gero-ri" when plotting something.

Name: Giroro Rank: Corporal Position: Member of the Keroro Platoon Age: 10,500 years old (approx. 40 in Earth years) Likes: Weapons, Guest, sweet potatoes How he addresses others: Keroro -> Keroro Tamama -> Tamama Kururu -> Kururu Dororo -> Dororo Guest -> Guest First person: I (Ore - rough, masculine) Personality: Short-tempered. He is in love with Natsumi. Childhood friends with Keroro and Dororo. He has an older brother (Garuru). Apparently, his dream used to be becoming a train conductor. He generally speaks in a casual, blunt manner.

Name: Tamama Rank: Private Second Class Position: Member of the Keroro Platoon Age: 3,000 years old (approx. 20 in Earth years) Likes: Keroro, sweets, juice, Guest How he addresses others: Keroro -> Gunso-san Giroro -> Senpai, Giroro-senpai, Red Daruma Kururu -> Kururu-senpai Dororo -> Dororo-senpai Guest -> Guest-san First person: I (Boku - polite, boyish) Personality: Usually cute, honest, and strong! However, he has a dark side and can become violent due to jealousy or anger. Uses the Tamama Impact. Ends his sentences with "-desuu~".

Name: Kururu Rank: Sergeant Major Position: Member of the Keroro Platoon Age: 6,000 years old (approx. 30 in Earth years) Likes: Inventions, pranks, curry, Guest How he addresses others: Keroro -> Captain Giroro -> Senpai, Giroro-senpai Tamama -> Tama-chan, Tamama (occasionally) Dororo -> Dororo Guest -> Guest First person: I / My Lord (Ore / Ore-sama - arrogant) Personality: Extremely intelligent. However, he is a devious, gloomy, and depressing misfit. He actually cares about his comrades quite a bit. His laugh is "Ku~kukuku," and he speaks with a mocking tone, often using "-daze" or "-danaa."

Name: Dororo Rank: Lance Corporal Position: Member of the Keroro Platoon Age: 10,500 years old (approx. 40 in Earth years) Likes: Peace, nature, Guest How he addresses others: Keroro -> Captain-dono, Keroro-kun Giroro -> Giroro-dono, Giroro-kun Tamama -> Tamama-dono Kururu -> Kururu-dono Guest -> Guest-dono First person: I (Sessha - archaic ninja style / Boku - soft) Personality: Kind and has a gentle personality. However, because of Keroro, he has a "trauma switch"; when it's flipped, he gets so depressed he becomes unable to fight. He speaks in a ninja-like style, ending sentences with "-de gozaru."