|Real Name||Caithlyn Gwyneth Santoso|
|Birthdate||March 26, 2009|
|Birthplace||Surabaya, East Java, Indonesia|
|Team||Former JKT48 Academy Class A|
Caithlyn Gwyneth was a member of JKT48 Academy's Class A.
- 2019.12.01 - Joined JKT48 as a member of Academy's Class B
- 2020.01.25 - Promoted to Academy's Class A
- 2021.03.11 - Graduated from Academy's Class A on March 11, 2021 (Announcement: January 11, 2021 | Graduation concert: February 28, 2021)
- 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.
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