Ogata Risa was born on November 5, 1998 in Tokyo, Japan.
On April 30, Ogata was introduced as a member of NICE GIRL Project! Kenshuusei during a live at Shinjuku BLAZE.
In summer 2012, she participated in the Morning Musume 11ki Member "Suppin Utahime" Audition, but failed to pass the third round. Her audition number was #125.
On November 16, NICE GIRL Project! and its trainee program was abolished. Soon after, Ogata, Hashimoto Nagisa, Horie Kizuki, Shimano Momoko, Hirose Ayaka, and Inoue Rei, were given the opportunity to become members of Hello Pro Kenshuusei, transferring to UP-FRONT PROMOTION and joining Hello! Project. They were formally introduced during the Hello Pro Kenshuusei Happyoukai 2014 ~11gatsu・12gatsu no Nama Tamago Show!~ on November 29 with three other girls.
On August 8, Ogata was announced as the sub-leader of Tsubaki Factory.
On November 6, Ogata celebrated her 19th birthday at a fanclub event titled Tsubaki Factory Ogata Risa Birthday Event 2017, which featured two shows at TOKYO FM HALL.
On February 28, Ogata announced that she had become a member of the Hello! Project Mobile advertising department and the monthly exclusive radio program Hello! Project Mobile Sendenkaigi, joining current members Ogata Haruna, Nonaka Miki, and Yanagawa Nanami.
On November 5, she celebrated her 20th birthday at a fanclub event titled Tsubaki Factory Ogata Risa Birthday Event 2018, which featured two shows at Shinjuku ReNY.
On November 6, she celebrated her 21st birthday at a fanclub event titled Tsubaki Factory Ogata Risa Birthday Event 2019, featuring two shows at Shinjuku ReNY.
Ogata is good friends with Morning Musume members Haga Akane and Ishida Ayumi. She is also good friends with fellow Tsubaki Factory member Kishimoto Yumeno; their paring name is Marumon (まるもん). She has also been close with Hirose Ayaka and Inoue Rei since they were in NICE GIRL Project! together.
Ogata was given the name Risa as it can pass as a name overseas. It is written in katakana to balance with her family name.
The following is a list of nicknames that have been used to refer to Ogata Risa:
- Risamaru (りさまる): Official nickname. Given to her when she first joined NICE GIRL Project! Trainee.
- Risa-chan (リサちゃん) and Rii-chan (リーちゃん): Other common nicknames used to refer to Ogata.
- Marunee (まるねぇ): Used by Haga Akane.
- Marunechin (まるねちん): Ogata is good friends with Haga Akane. Their pairing name is "Marunechin" a combination of their nicknames "Risamaru" and "Akanechin".
- Name: Ogata Risa (小片リサ)
- Nickname: Risamaru (りさまる)
- Birthday: November 5, 1998
- Birthplace: Tokyo, Japan
- Blood Type: A
- Height: 159cm
- Western Zodiac: Scorpio
- Eastern Zodiac: Tiger
- Hello! Project Status:
- NICE GIRL Project! Status:
- 2011-04-30: NICE GIRL Project! Kenshuusei member
- 2014-11-16: Left
- UP-FRONT GROUP Status:
- NICE GIRL Project! Kenshuusei Color:  Red
- Tsubaki Factory Member Color: Light Orange
- Hello! Project Groups:
- NICE GIRL Project! groups:
- NICE GIRL Project! Kenshuusei (2011–2014)
- Specialties: Jazz dance, kendama (3rd level)
- Hobbies: Drawing, learning German
- Favorite Music Genres: Idol music, jazz, techno pop
- Favorite Food: Watermelon
- Favorite Sport: Long jump
- Favorite Color: Red
- Motto: "Ryuukan godou! Doryoku wa jibun wo uragiranai" (流汗悟道！ 努力は自分を裏切らない; Sweating is an enlightenment! Your effort won’t betray you)
- Favorite Tsubaki Factory Song: Hitorijime
- Favorite Hello! Project songs: "Waraenai Hanashi", "Watashi no Kokoro"
- Looks Up To: Fukuda Kanon, Funaki Musubu
- [2019.11.05] Orange no Sunadokei ~Risa Hatachi~
Featured on the cover
- [2017.01] VDC Magazine
- [2018.01] BIG ONE GIRLS
- [2018.05] Up to Boy
- [2016.11.03] Tsubaki Factory Ogata Risa Birthday DVD 2016
-  TRIANGLE
-  Thank You Very Berry
-  Kizetsu Suru Hodo Aishiteru!
-  Zoku 11nin Iru! Higashi no Chihei, Nishi no Towa
-  Nega Poji Poji
-  Harukanaru Toki no Naka de 6 Gaiden ~Tasogare no Kamen~
- [2014–] Hello! Project Station
- [2014–2016] MUSIC+
- [2015–2016] GREEN ROOM
- [2016–] Upcoming
- [2016–2017] Girls Night Out
- [2017–] tiny tiny
- [2018–] OMAKE CHANNEL
- [2019–2020] Hello Pro no Oshigoto Challenge
-  Hello Pro Kouhaku Taiko THE☆BATTLE 2019
- [2016–2019] HELLO! DRIVE! (HELLO! DRIVE! -ハロドラ-) (Wednesdays, 2016.09–2017.09; Tuesdays, 2017.10–2019.06)
- [2018-] Hello! Project Mobile Sendenkaigi (ハロ！モバ宣伝会議) (Hello! Project Mobile exclusive)
- She is left handed.
- She is a fan of ℃-ute and Juice=Juice.
- Her goal was to win the "Best Newcomer Award" with Tsubaki Factory. They achieved this at the end of 2017.
- She has stated during an interview that she wants to go to Germany, and that she tries to learn some words in German.
- Tsubaki Factory did a school ability test and she came first among all the members.
- She went to a release event for Juice=Juice's "Ijiwaru Shinai de Dakishimete yo / Hajimete wo Keiken-chuu".
- Within Hello! Project, the senior she admires the most is ANGERME's Fukuda Kanon. By group, she admires Okai Chisato of ℃-ute, Sayashi Riho of Morning Musume, Miyamoto Karin of Juice=Juice, Tsugunaga Momoko of Country Girls and Hamaura Ayano of Kobushi Factory.
- Ogata Risa on the NICE GIRL Project! Wiki
- Gallery:Ogata Risa
- List:Ogata Risa Concert & Event Appearances
- List:Ogata Risa Discography Featured In
- List:Ogata Risa Pocket Morning Weekly Q&A
Oldest member of Tsubaki Factory
Sub-leader of Tsubaki Factory
- ↑ Ogata Risa. "ハロ！モバ宣伝部！ 小片リサ" (in Japanese). Tsubaki Factory Official Blog. 2019-02-28.
- ↑ https://twitter.com/HMV_BOOKS/status/1175064626012315653
- ↑ "お兄ちゃんみたいな存在。 小片リサ" (in Japanese). Tsubaki Factory Official Blog. 2015-06-26.
- ↑ "りがとうございます！ 小片リサ" (in Japanese). Ogata Risa Official Blog. 2017-03-01.
- ↑ Pocket Morning. 2016-11-06. (Translation by Ro-kun)
- ↑ https://web.archive.org/web/20150312021349/http://www.helloproject.com/helloprokenshusei/profile/risa_ogata/
- ↑ "サイリウム!!" (in Japanese), Hirose Ayaka @ Trainees Collection
- ↑ Ogata Risa. "＊はじめまして！＊ 小片リサ" (in Japanese). Tsubaki Factory Official Blog. 2015-05-16.
- Tsubaki Factory Profile
- Hello Pro Kenshuusei Profile (archived)
- Tsubaki Factory Official Blog
- Hello Pro Kenshuusei Blogs: Hello! Project tour blog, February/March 2015
- Trainees-Collection Blog (tag: "Ogata Risa")