A ghost who lives in Keroro&#039;s room, which was originally storage. Aki was able to buy it from a friend at a very low price because of this. The ghost is very often shown watching Keroro and the other frogs even if they never see her. She haunts the house because she was imprisoned for hiding a Keronian, believed to be a Kappa, with features similar to Keroro. She supposedly died in a cell in the same area as Keroro&#039;s room. In reality, the Keronian she hid helped her to escape and she died at 90 years old. She probably haunts the storage room because Keroro reminds her of the Keronian who saved her. The only person to ever learn her real name is Momoka when she turned herself into a ghost to get closer to Fuyuki.

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)

[Twitter](https://twitter.com/trinanishimura)
Most known for her work on Steins;Gate as Kurisu Makise and Mikasa Ackerman for Attack on Titan, Trina Nishimura is an American voice actor from Amarillo, Texas. She got her Bachelor of Art's degree at the University of North Texas and pursued her first voice acting role in 2006 as Namiko in Desert Punk.

[Twitter](https://twitter.com/10_chie_01)

**Hometown:** Saitama Prefecture, Japan

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.

Omiyo