Tororo is the hacker of the Garuru Platoon who thinks he's better than everyone else. He is a red Keronian tadpole that bears a striking resemblance to baby Kururu and his symbol is a circle with three bumps. He hacked into the Keroro Platoon's systems during the Garuru Platoon's invasion. Kururu faced him, but was (for the first time in his unsettling existence) stumped; Tororo was one problem Kururu could not fix. Keroro gave his soldiers a pep talk, Dororo threw an energy shuriken into Garuru Platoon's base, freeing Paul, Momoka, Koyuki, and Mutsumi and Kururu hacked Tororo's base, making all his mechas, which were originally sent to attack Keroro Platoon's base, attack Tororo's base. With his glasses and ship destroyed, a computer falls on Tororo's face and he is knocked out, while Kururu announces that he has 'Gotten rid of the annoying thing'. During the encounter with the Keroro Platoon Double, he mistakens Kururu Double for the real Kururu and, driven by anger and the thirst of revenge, Tororo wipes out Kururu Double, along with the rest of the Keroro Platoon Double and almost the Garuru Platoon.  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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Affiliated with Gokū and 21st Century Fox. Best known for the roles of Ranma Saotome (Ranma ½), Tombo (Kiki's Delivery Service), Yattaro (Kyattou Ninden Teyandee), InuYasha (InuYasha), L (Death Note), Usopp (One Piece), Hideyoshi (Law of Ueki), and Kaito Kid and Shinichi Kudo (Detective Conan). He made his first public appearance in North America at Otakon 2008.

Father of [Ryuunosuke](https://anilist.co/staff/278275/) and [Akane Yamaguchi](https://anilist.co/staff/210640/).

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.