List of tripleS’ Sub-Units
tripleS (트리플에스/トリプルS; also known as SSS or Social Sonyo Seoul), is an interactive, fan-participating 24-member South Korean girl group under MODHAUS. The members were revealed through a two-year pre-debut project that ran from April 2022 to April 2024, with each member assigned an “S” number that corresponded to their order of reveal. The group consists of SeoYeon, HyeRin, JiWoo, ChaeYeon, YooYeon, SooMin, NaKyoung, YuBin, Kaede, DaHyun, Kotone, YeonJi, Nien, SoHyun, Xinyu, Mayu, Lynn, JooBin, HaYeon, ShiOn, ChaeWon, Sullin, SeoAh, and JiYeon. As their concept is to rotate between different units chosen by the fans, here is a list of all the official sub-units of the group.
tripleS Concept:
Known as “the idol of all possibilities“, tripleS is the world’s first decentralized K-pop idol group. The members will rotate between the full group, sub-units, and solo activities. Fans can communicate with the group and participate in their activities such as deciding sub-units through Gravity, and can collect digital photocards called “Objekts”. With the members all having the special ability ‘S’, they will join forces and demonstrate their abilities through the “Dimensions” (sub-units) that they will recreate every season with new concepts.
tripleS Official Fandom Name: WAV (웨이브)
tripleS Official Color: N/A
Official Lightstick: heartS
2022 Debut:
Acid Angel from Asia
Hangul: 애시드엔젤프롬에이시아
Also As: AAA, tripleS AAA
Formed: Grand Gravity (1st Grand Gravity)
Debut: October 28, 2022 with ACCESS (mini album)
Leader: S5 YooYeon
Year Active: 2022
Status: Regrouped
Debuting Members: 4 (all unit members)
Members:
S2 HyeRin, S5 YooYeon, S7 NaKyoung & S8 YuBin
Acid Angel from Asia was the first sub-unit of tripleS, formed through the group’s First Gravity, titled Grand Gravity, which aimed to sort the first eight revealed members into two units (Acid Angel from Asia and +(KR)ystal Eyes). NaKyoung was announced as the first member of the unit on September 22, followed by HyeRin on the 23rd, YuBin on the 24th and YooYeon on the 25th. They debuted on October 28, 2022 with the mini album <ACCESS>. They regrouped following the end of their promotions.
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2023 Debuts:
+(KR)ystal Eyes
Hangul: 크리스탈아이즈
Also As: +(KR)E, KRE, 크아, +(KR)
Formed: Grand Gravity (1st Grand Gravity)
Debut: May 4, 2023 with AESTHETIC (mini album)
Leader: N/A
Years Active: 2022–2023
Status: Regrouped
Debuting Members: None
Members:
S1 SeoYeon, S3 JiWoo, S4 ChaeYeon & S6 SooMin
+(KR)ystal Eyes was the second sub-unit of tripleS, formed through the group’s First Gravity, titled Grand Gravity, which aimed to sort the first eight revealed members into two units (Acid Angel from Asia and +(KR)ystal Eyes). SeoYeon was announced as the first member of the unit on September 22, followed by SooMin on the 23rd, ChaeYeon on the 24th and JiWoo on the 25th. They debuted on October 28, 2022 with the mini album <ACCESS>. They regrouped following the end of their promotions.
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ACID EYES
Hangul: 애시드아이즈
Also As: Black Cherry
Formed: N/A
Debut: June 6, 2023 with “Cherry Gene” (single album)
Leader: N/A
Year Active: 2023
Status: Regrouped
Debuting Members: None
Members:
S1 SeoYeon, S2 HyeRin, S3 JiWoo, S4 ChaeYeon, S5 YooYeon, S6 SooMin, S7 NaKyoung & S8 YuBin
ACID EYES is the first collaboration sub-unit and third overall sub-unit of tripleS. Announced on June 1, 2023, the unit consists of the members of their two previous sub-units: Acid Angel from Asia and +(KR)ystal Eyes, and is stated to be a mashup project. They debuted on July 6, 2023 with the single album <Cherry Gene>. They had previously pre-released the lead single “Cherry Gene ‘Baddest Mix’” on June 6.
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LOVElution
Hangul: 러블루션
Also As: LOVE
Formed: Grand Gravity: Two Big WAVes (2nd Grand Gravity)
Debut: August 17, 2023 with ↀ (MUHAN) (mini album)
Leader: S1 SeoYeon
Year Active: 2023
Status: Regrouped
Debuting Members: 3 (S13 Nien, S14 SoHyun, S15 Xinyu)
Members:
S1 SeoYeon, S2 HyeRin, S8 YuBin, S9 Kaede, S10 DaHyun, S13 Nien, S14 SoHyun & S15 Xinyu
LOVElution is the fourth sub-unit of tripleS, formed through the group’s Second Grand Gravity, titled Grand Gravity: Two Big WAVes, which aimed to sort the fourteen revealed members into two units of eight members each, with S15, then still unrevealed, already placed in the unit. YuBin was announced as the first member of LOVElution on April 22, followed by SeoYeon on April 23, Kaede on April 24, DaHyun on April 25, SoHyun on April 26, HyeRin on April 27, and Nien on April 28. Xinyu was revealed as S15 on July 2. They debuted on August 17, 2023 with the mini album <ↀ (MUHAN)>. They regrouped following the end of their promotions.
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EVOLution
Hangul: 에볼루션
Also As: EVOL
Formed: Grand Gravity: Two Big WAVes (2nd Grand Gravity)
Debut: October 11, 2023 with ⟡ (MUJUK) (mini album)
Leader: S5 YooYeon & S3 JiWoo (co-leader)
Year Active: 2023
Status: Regrouped
Debuting Members: 3 (S11 Kotone, S12 YeonJi, S16 Mayu)
Members:
S3 JiWoo, S4 ChaeYeon, S5 YooYeon, S6 SooMin, S7 NaKyoung, S11 Kotone, S12 YeonJi & S16 Mayu
EVOLution is the fifth sub-unit of tripleS, formed through the group’s Second Grand Gravity, titled Grand Gravity: Two Big WAVes, which aimed to sort the fourteen revealed members into two units of eight members each, with S16, then still unrevealed, already placed in the unit. YooYeon was announced as the first member of EVOLution on April 22, followed by ChaeYeon on April 23, NaKyoung on April 24, JiWoo on April 25, Kotone on April 26, SooMin on April 27, and YeonJi on April 28. Mayu was revealed as S16 on July 19. They debuted on October 11, 2023 with the mini album <⟡ (MUJUK)>. They regrouped following the end of their promotions.
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NXT
Hangul: 엔엑스트
Also As: tripleS NXT, tripleS NEXT
Formed: N/A
Debut: December 23, 2023 with “Just Do It” (digital single)
Leader: N/A
Year Active: 2023
Status: Regrouped
Debuting Members: 4 (all unit members)
Members:
S17 Lynn, S18 JooBin, S19 HaYeon & S20 ShiOn
NXT is the sixth sub-unit of tripleS. On December 11, the first teaser for NXT was released, confirming the upcoming reveal of four new members (S17-S20). Lynn was introduced as the unit’s first member on December 21, followed by JooBin on the 22nd, HaYeon on the 23rd and ShiOn on the 24th. They debuted on December 23, 2023 with the digital single “Just Do It“.
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2024 Debuts:
Aria
Hangul: 아리아
Also As: Ballad, Ballad Unit, Team D, tripleS Aria
Formed: Grand Gravity: Ballad Dimension
Debut: January 15, 2024 with “Structure of Sadness” (single album)
Leader: S10 DaHyun
Years Active: 2023-2024
Status: Regrouped
Debuting Members: None
Members:
S3 JiWoo, S4 ChaeYeon, S9 Kaede, S10 DaHyun & S13 Nien
Aria is the seventh sub-unit of tripleS, formed through the group’s Third Grand Gravity, titled Grand Gravity: Ballad Dimension, which aimed to form a five-member unit to sing a new ballad. DaHyun was announced as a predetermined member of the unit on November 18. The vote in which the combination of four members who would sing the ballad alongside DaHyun would be chosen took place from November 22 until November 24. The winning combination was announced to be D, which consisted of JiWoo, ChaeYeon, Nien, and Kaede. They debuted on January 15, 2024 with the single album “Structure of Sadness“.
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Glow
Hangul: 글로우
Also As: N/A
Formed: N/A
Debut: June 21, 2024 with “내적 댄스 (Inner Dance)” (digital single)
Leader: S24 JiYeon
Year Active: 2024
Status: Regrouped
Debuting Members: None
Members:
S21 ChaeWon, S22 Sullin, S23 SeoAh & S24 JiYeon
Glow is the eighth sub-unit of tripleS, consisting of the group’s last four revealed and final members: ChaeWon, Sullin, SeoAh, and JiYeon. They debuted on June 21, 2024 with the digital single “내적 댄스 (Inner Dance)“.
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Visionary Vision
Hangul: 비저너리 비전
Also As: Vision@ry Vision, VV, tripleS VV, Dance Unit
Formed: Grand Gravity: Vision@ry Vision
Debut: October 23, 2024 with <Performante> (full album)
Leader: S2 HyeRin
Year Active: 2024
Status: Regrouped
Debuting Members: None
Members:
S2 HyeRin, S5 YooYeon, S7 NaKyoung, S8 YuBin, S9 Kaede, S11 Kotone, S12 YeonJi, S13 Nien, S14 SoHyun, S15 Xinyu, S17 Lynn & S24 JiYeon
Vision@ry Vision is the ninth sub-unit of tripleS.
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∞!
Japanese: ハッチ
Also As: 핫찌,トリプルS八, tripleS∞!, Hatch!, Hatch
Formed: Grand Gravity: Japan Dimension
Debut: November 20, 2024 with “Untitled” (single album)
Leader: S16 Mayu
Years Active: 2024-present
Status: Semi-active
Debuting Members: None
Members:
S3 JiWoo, S4 ChaeYeon, S5 YooYeon, S6 SooMin, S11 Kotone, S16 Mayu, S20 ShiOn & S21 ChaeWon
∞! (Hatchi!) is the first Japanese and tenth overall sub-unit of tripleS.
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2025 Debuts:
Alphie
Hangul: 알피
Also As: tripleS @%
Formed: N/A
Debut: September 3, 2025 (first day of the tour)
Leader: N/A
Year Active: 2025
Status: Regrouped
Members:
S5 YooYeon, S11 Kotone, S13 Nien, S17 Lynn, S19 HaYeon, S20 ShiOn, S21 ChaeWon & S24 JiYeon
Alphie is the eleventh sub-unit of tripleS. It was formed as a special unit for their 2025 world tour ‘Alpha Percent’.
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Moon
Hangul: 문
Also As: tripleS m
Formed: msnz Grand Gravity
Debut: November 24, 2025 with <Beyond Beauty> (mini album)
Leader: S22 Sullin
Years Active: 2025-present
Status: Active
Members:
S9 Kaede, S14 SoHyun, S17 Lynn, S20 ShiOn, S22 Sullin & S24 JiYeon
Moon is the twelfth sub-unit of tripleS.
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Sun
Hangul: 썬
Also As: tripleS s
Formed: msnz Grand Gravity
Debut: November 24, 2025 with <Beyond Beauty> (mini album)
Leader: S15 Xinyu
Years Active: 2025-present
Status: Active
Members:
S2 HyeRin, S4 ChaeYeon, S5 YooYeon, S15 Xinyu, S16 Mayu & S21 ChaeWon
Sun is the thirteenth sub-unit of tripleS.
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Neptune
Hangul: 넵튠
Also As: tripleS s
Formed: msnz Grand Gravity
Debut: November 24, 2025 with <Beyond Beauty> (mini album)
Leader: S1 SeoYeon
Years Active: 2025-present
Status: Active
Members:
S1 SeoYeon, S7 NaKyoung, S10 DaHyun, S11 Kotone, S13 Nien & S23 SeoAh
Neptune is the fourteenth sub-unit of tripleS.
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Zenith
Hangul: 제니쓰
Also As: tripleS z
Formed: msnz Grand Gravity
Debut: November 24, 2025 with <Beyond Beauty> (mini album)
Leader: S19 HaYeon
Years Active: 2025-present
Status: Active
Members:
S3 JiWoo, S6 SooMin, S8 YuBin, S12 YeonJi, S18 JooBin & S19 HaYeon
Zenith is the fifteenth sub-unit of tripleS.
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2026 Debut:
Aura
Hangul: N/A
Also As: Ballad Unit 2
Formed: Grand Gravity: Ballad Dimension 2
Debut: 2026
Leader: N/A
Year Active: 2026
Status: Upcoming
Members:
S1 SeoYeon, S18 JooBin, S20 ShiOn & S23 SeoAh
Aura is the sixteenth sub-unit of tripleS.
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Related: tripleS Members Profile
tripleS Discograhy
tripleS: Who is Who?
Which is your favorite subunit of tripleS? Which members would you like in a subunit together? Feel free to comment down below! 🙂