|Birth Name||Caithlyn Gwyneth Santoso|
|Other Name||Caithlyn Gwyneth|
|Birthdate||March 26, 2009|
|Birthplace||Surabaya, East Java, Indonesia|
|Current Age||12 Years Old|
|Social Networks||Twitter / Instagram / TikTok / SHOWROOM|
|Idol Career Info|
|Former Team||Academy Class A|
|Debuted||December, 2019 / 9th Generation|
Caithlyn Gwyneth was a member of JKT48 Academy's Class A.
- Name in Japanese: ケイトリン・グイネット
- Nickname in Japanese: ケイトリン
- Younger sister of Christabel Jocelyn
- Youngest member in AKB48 Group and JKT48.
- Hobbies: Dancing, singing, cooking, swimming, acting, playing games.
- Admired Members: Azizi Asadel
- Strenghts: Singing, dancing, acting
- Weakness: Can't eat vegetables and fruit
- Favorite word: Funny
- Ambitions: Artist
- Favorite foods: Pizza
- Favorite colors: Purple, pink, yellow, tosca.
- Hated foods: Vegetables and fruits
- The most foreign language you want to master: English
- Favorite school subject: English, religious education
- Favorite hangout place: On the road
- Favorite animals: Dogs
- On January 23, 2020, she has passed the Class B Academy Exam in Step 1.
- On January 25, 2020, she has passed the Class B Academy Exam in Step 2, and promoted to Class A.
- JKT48 Academy Class B → JKT48 Academy Class A → Graduation