Garuru is an S-rank sniper, the leader of the Garuru Platoon and Giroro's older brother. He's an indigo Keronian frog with a black helmet, has a red triangle pointing downward with a line in the downword middle for his personal symbol and also wears a belt that, unlike Giroro, is kept for power instead of to remember deceased friends during a Keron war. When he heard that the Keroro Platoon had no progress in their mission and that Giroro was not the leader, the Garuru Platoon went to Pekopon to take care of the mission themselves. Garuru defeated his brother in a one-on-one gun match, but was later defeated in a rematch. Thanks to the Keroro Platoon's friendship and united power, the Garuru Platoon was defeated. It was however hinted at strongly that Garuru's true mission was merely to test the abilities of the Keroro Platoon. Garuru and his platoon appear again in episode 130, where he faces a clone of Giroro and in 154 he shows up to aid the Keroro Platoon in defeating ZZZ. It turns out Garuru is the only one who can pronounce this new menace's name without biting his tongue. In the manga he appears in volume 14, where he shocks Giroro by revealing he's there for a short holiday. He brings a gift to Giroro, which grows into a large, flying sweet potato and the brothers have to team up to bring it down, a ploy by their father to teach them a lesson. In the end Powered Natsumi shows up, helping Garuru defeat the potato with her beam sabres as it is immune to guns and such ballistic weapons and Garuru appears impressed by the girl. During said fight with the potato there is a flashback from Giroro and Keroro's childhoood where we see a younger, presumably teenage Garuru defending his younger brother and friend against two bullies intending to take over their secret base/playground. Another interesting detail is that the younger Garuru wears the same kind of belt as present day Giroro, with a rectangular buckle. In volume 15 he sends Pururu to investigate the Keroro Platoon on their desire to invade.  Source - Wikipedia

Keroro is a frog-like alien sent from his home planet on a mission to conquer Earth. But when his cover is blown, his battalion abandons him and he ends up in the home of the Hinata family. There, he's forced to do household chores and sleep in a dark basement that was once supposedly a prison cell haunted by the ghost of an innocent girl. He even spends his free time assembling Gundam model kits. During his stay, Keroro meets up with subordinates who were also stranded during their failed invasion. 
 
(Source: Anime News Network)

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Son of voice actor [Chikao Ootsuka](https://anilist.co/staff/95974/). In 2005, he married fellow voice actress [Youko Soumi](https://anilist.co/staff/95912/), but they divorced in 2009.

__Non-Anime Roles:__

- Heismay Noctule - Metaphor: ReFantazio (VG)
- Koichi Adachi - Yakuza: Like a Dragon (VG)

Date of birth: May 18th, 1948
Hometown: Milano, Lombardia, Italy

Sergeant Keroro is the Captain of the Space Invasion Forces Special Advance Team of the 58th Planet of the Gamma Storm Cloud System, sent to the planet Pokopen (aka Earth) to collect intelligence for his planet's invasion force. He is also a frog. After his ship crash-lands in the planet earth, he takes shelter in the Hinata household, but the two kids, Fuyuki and Natsume, find him and take away his alien weapons. When his people discover that the Pokopenians are aware of him, Keroro is abandoned - left to fend for himself in this hostile world. But he's not alone - four other pre-invasion agents were are also lurking on Earth. 
 
(Source: Tokyopop) 
 
Includes chapter 6.5.