|First appearance|| |
|Voiced by|| Haruna Ikezawa (Japanese)|
Monica Rial (Funimation)
|Species / Type||Pekoponian|
Momoka Nishizawa (西澤 桃華 Nishizawa Momoka) is one of the main characters in the series Keroro Gunso.
Momoka is the only child of the multi-trillionaire head of Nishizawa Corporation. She has a huge crush on Fuyuki Hinata and beats up anyone who stands in her way with Fuyuki. She primarily beats up her Keronian partner Tamama due to his childish actions of standing between Fuyuki and Momoka (at times literally), but other times, they help each other and are as bonded like siblings. After seeing Tamama's battles, Momoka was secretly training so she could fight and protect Fuyuki. She is later equipped with armor that holds many powerful features and now fights with the Keroro Platoon and for Fuyuki.
Momoka and Tamama are similar in that they both have a cutesy and kind attitudes, yet violent alternate personalities. Momoka is mostly shown as easily frightened and shy, but when in the face of enemies (or when she is just very angered), she reverts to her violent side in a heartbeat. Sometimes, it is even shown that the two sides of Momoka often interact with one another, but not exactly telepathically (which embarrasses Momoka for saying her thoughts out loud), although it is also shown that sometimes the two sides will work around each other, with the evil side beginning a plan to win Fuyuki's affections that required the good side's not knowing. One time, the result of a freak accident ended up having the two sides of Momoka being split, one the bossy and intimidating side that even frightens the Keroro Platoon, and the other the timid and cute side. Eventually, the two were morphed back into one Momoka thanks to the help from Keroro and some synchronized swimming. In several episodes, she, with the help of Nishizawa Peach Group, would take the chances for Momoka to send her love to Fuyuki, only to have limited success. She is a member of the kaito group MorePeachSummer with Mois and Natsumi so she can steal an embarrassing painting from her father's state-of-the-art secured manor. Momoka met Tamama on her birthday and when she was in the 1st grade. Momoka had long hair when she was young but on her 7th or 8th birthday she saw Tamama in trouble (she didn't know Tamama yet) she cut her hair short and promised to save Tamama from a space-monster as long as he agreed to become her pet. Also on Momoka's first day of school, she was new to that school and she was in first grade she ran into Fuyuki who at time was also new to that school because he moved to Tokyo from somewhere like Momoka did.
Judging from chapter 140 of the manga, which features a little of her backstory, Momoka lived in France for two years (presumably with her friend from the fourth movie, Shion) when she was young.
Momoka has two personalities. Her first and most commonly viewed personality is cute, polite, shy and sweet (based on her father and mother). In this personality, she acts weak and cannot unleash her true power. Her second is brutal, hot-tempered, and incredibly strong (based on her mother). When phasing to her brutal side, you hear a sound similar to that of a sword sharpening or being unsheathed. The four soft spikes on her head then sharpen, and her expression changes. This personality is triggered by feelings of anger and frustration. However, a third one appears as an effect of the personality transferer, in which she absorbs the rest of the personality of her father.
- Baio Nishizawa - Momoka's father. Baio loves his daughter greatly, and in recent years of him being absent, he has decided to bond more with his daughter. Momoka also loves him, but she can be annoyed by her father's demanding personality.
- Oka Nishizawa - Mother
- Fuyuki Hinata - Momoka has a BIG crush on Fuyuki, and he is currently her friend and fellow Occult Club member. She is constantly trying to get hugs and kisses from him, but she has not been successful, except on the last episode of the anime, she got rather close to him. In Episode 196, Momoka did dance with Fuyuki.
- Tamama - Momoka's partner, Momoka saved Tamama when she was little and made a deal with him to become her 'pet'. Both sides of her care deeply about Tamama and she praises him constantly.
- Angol Mois, Natsumi Hinata, Koyuki Azumaya - Friends and comrades in arms in the group MorePeachSummerSnow.
- Paul Moriyama - Loyal Butler and Bodyguard.
- Omiyo - A friend of Momoka. Omiyo helped Momoka live as a ghost.
- Shion- Childhood best friend.
- Chiruyo Tsukigami- Friendly love rival for Fuyuki's love.
- Alisa Southerncross- Rival for Fuyuki's love (One sided on Momoka's side.)
|Name||What they call Momoka||What Momoka calls them||What Momoka (other side) calls them|
|Keroro||Momoka-dono||Kero-chan / Gunsou-san / Keroro-san|
|Tamama||Momo-chi (モモッチ), Momo-Baby||Tama-chan||Tama-kou|
|Dororo||Momoka-dono||Dororo-san / Friend of Tama-chan (タマちゃんのお友達)|
|Fuyuki||Nishizawa-san / Momoka-chan (However he has only called her by her first name once in episode 105 when he was enchanted to fall in love with her by an alien)||Hinata-kun / Fuyuki-kun||Fuyuki|
|Natsumi||Momoka-chan / Nishizawa-san||Natsumi-san / Natsumi-senpai|
|Aki||Momoka-Chan, Sweetie (In the Funimation Dub.)||Okaa-sama, Fuyuki-San's Mom|
|Koyuki||Momoka-chan / Momoka-san||Koyuki-san|
|Mois||Momoka-san / Momo-chi-san||Mois-san|
|Paul||Momoka-sama / (Momoka-) ojousama||Paul|
|Taruru||Momoka-Dono||Tama-Chan's Friend, Taruru||Tama-Kou's Friend|
Momoka literally means "peach flower". Nishi in her family name "west".
Momoka has short, dark teal/blue hair with two pieces sticking up on each side. She has dark purple eyes. Momoka's outfits change, but most of them consist of puffy sleeves.
Height: 152 cm
Weight: 44 kg
- Momoka is one of the only members of Fuyuki's Occult Club. The other is Chiruyo Tsukigami, her love rival.
- Momoka and her Keronian partner, Tamama, are in love with the main partners of the series, Fuyuki and Keroro.(What a coincidence)
- Momoka hates Alisa Southerncross because Alisa has a crush on Fuyuki.
- Momoka is one of the only characters seen as a baby.
- Brutal Momoka is able to survive very serious injuries, such as scrapping her feat on airducts. 
- Momoka's blood type is A.