Like in AKB48, regular auditions to recruit new members are held, and the future successful candidates, the Trainee members, take part of a in-training team of members that work as sub and under for the official members in various activities (mostly the theater performances). And then, when any of the official members graduate, a girl is promoted to fill the space.
- Bolded names indicate members, which are still active in SGO48 or one of the sister groups.
- Italicized names indicate members with pending graduations
- The members' pictures are of members who are still active and are listed in accordance to the alphabetical order of members in each generation.
- Announced on November 17, 2018
Members (29): Hikari, Minxy, Mon, Yuumi, Mẫn Nghi, Như Thảo, Phụng Nhi, Tiên Linh, Sunny, Thu Nga, Ni Ni, Trùng Dương, Ánh Sáng, Elena, Sachi, Mochi, Lệ Trang, Tammy, DONA, Celia, Janie, Trúc Phạm, Gia Nghi, Anna, Ashley, BunnyV, Xuân Ca, Kaycee, Linh Mai.
- Still part of Team Trainee (20): Hikari, Mon, Mẫn Nghi, Tiên Linh, Sunny, Thu Nga, Ni Ni, Trùng Dương, Ánh Sáng, Mochi, Lệ Trang, Tammy, DONA, Janie, Trúc Phạm, Anna, Ashley, Xuân Ca, Kaycee, Linh Mai
- Former trainees (9): BunnyV, Yuumi, Gia Nghi, Sachi, Celia, Elena, Minxy, Như Thảo, Phụng Nhi
- Application starts from December 20, 2020 to March 14, 2021