Tonnam Piamchon Damrongsunthornchai official photo - Thai actor, singer and rapper, cast in Love Upon a Time as the manservant Chuay

Tonnam Piamchon Damrongsunthornchai

ActorModelSingerThai

BIOGRAPHY

Tonnam Piamchon Damrongsunthornchai (Thai: ต้นน้ำ เปี่ยมชล ดำรงสุนทรชัย; born October 2, 1996) is a Thai actor, singer and rapper. In the 2026 Domundi TV historical Boys’ Love series Love Upon a Time he plays Chuay, the manservant attached to Nakun “Klao” Phattanatada, the character who moves most freely between the noble household and the village, and therefore the one who sees earliest that the man wearing Klao’s face is not Klao.

He was born in Bangkok on October 2, 1996 and studied law at Thammasat University, where sources place him in the Faculty of Law. That is an unusual academic background for the Thai BL circuit, and it is the detail most consistently repeated about him across Thai and English profile databases.

Music reached him before drama did. In 2019 he was a member of KissBoysTH, a five-piece Thai project boy group assembled through a reality format, which debuted on May 21, 2019 and dissolved within the same year; he served as one of its vocalists and its rapper alongside Jo, Mean, Saint and Peak. The group’s short life meant his singing and rapping stayed a secondary credit rather than a career, but it is why his profession is usually given as actor, singer and rapper rather than actor alone.

His screen career began in 2017 with a guest turn as Mixer in Make It Right 2, and grew steadily through the Thai Boys’ Love boom: Natee in Why R U? (2020), Dr. Singharat “Sing” in Triage (2022), Ton-Rak “Ton” in Cutie Pie (2022), Dom in Your Sky (2024) and appearances in Until We Meet Again and Love in the Air. He has also carried leads: Chanin in It’s Ok to Be 30 (2023) and Khomkrit in Investigation of Love Season 2 (2025), plus The Thirsty 30 (2025).

On film he played Itt in My Sexdoll (2020) and Disco in Make Money (2020), both leads, appeared in Love and Run (2019) and took a guest role as Hia in Dinosaur Love: The Movie (2023). Cutie Pie (2022) and Your Sky (2024) both place him inside the Domundi TV production family several years before Love Upon a Time, which is the likeliest route by which he came to the 2026 series. He is a Libra, born in the year of the Rat, and posts as tonnaaam on both Instagram and X.

PROFILE DETAILS

Native Name
ต้นน้ำ เปี่ยมชล ดำรงสุนทรชัย
Real Name
Piamchon Damrongsunthornchai
Former / Birth Name
Romanised in some databases as Piamchol Dumrongsoontornchai or Piamchon Damrongsoonthornchai; no legal name change on record.
Nickname
Tonnam (ต้นน้ำ), Tonnam Piamchon
Pronouns
he/him
Born
(Age 29)
Birthplace
Bangkok, Thailand
Gender
Male
Western Zodiac
Libra ♎
Chinese Zodiac
Rat 🐭
Profession
ActorModelSinger
Nationality
Thai
Debut
2017 — Make It Right 2 (2017) as Mixer
Years Active
2017-present
Languages
Thai (native)
Skills
Acting, Singing, Rapping, Modeling

FILMOGRAPHY — TV SERIES (2)

Lost to Light (2026) poster — Thai BL + T-POP rom-com on GMM25 about a struggling idol group
Lost to Light
2026
Director
Love Upon a Time (2026) Thai BL series official poster featuring Net Siraphop Manithikhun, JJ Radchapon Phornpinit, Latte Thanutchon Chankaewarmorn and Kim Pongsaton Sittipan - Domundi TV Ayutthaya time-travel drama
Love Upon a Time
2026
Support Role

FUN FACTS

  • His nickname ต้นน้ำ literally means “headwater”, the source of a stream.
  • He read law at Thammasat, which makes him one of very few law graduates on the Thai BL circuit.
  • He was in a boy group that debuted and disbanded inside the same year, 2019.
  • In KissBoysTH he was the rapper as well as a vocalist.
  • He is a Libra, born on the second of October, and a Rat in the Chinese zodiac.
  • His Instagram and X handle is the same word with three a’s: tonnaaam.
  • He played a doctor in Triage and a servant in Love Upon a Time, four centuries apart.
  • He has appeared in both Cutie Pie and Your Sky, so he knew the Domundi set well before 2026.
  • Two of his 2020 films, My Sexdoll and Make Money, cast him as the lead in the same year.
  • He has carried a main role in a series about turning thirty, and later one called The Thirsty 30.
  • He wore full Ayutthaya-era costume for the whole of Love Upon a Time.
  • His character Chuay is married on screen to Sai, played by March Manussita Jarusasi.

TRIVIA

  • His legal name is Piamchon Damrongsunthornchai (เปี่ยมชล ดำรงสุนทรชัย); “Tonnam” (ต้นน้ำ) is the nickname used in all professional credits.
  • He was a member of KissBoysTH, a five-member Thai project boy group formed through a reality format, which debuted on May 21, 2019 and disbanded the same year. The other members were Jo, Mean, Saint and Peak.
  • Within KissBoysTH his positions were vocalist and rapper, which is why Thai and English databases list him as actor, singer and rapper rather than actor alone.
  • He holds a bachelor’s degree from Thammasat University; sources naming the faculty place him in Law.
  • His screen debut was a guest role as Mixer in Make It Right 2 (2017), two years before the KissBoysTH debut.
  • His main-role credits include Chanin in It’s Ok to Be 30 (2023) and Khomkrit in Investigation of Love Season 2 (2025), plus the films My Sexdoll (2020) and Make Money (2020).
  • He appeared in two earlier Domundi TV productions, Cutie Pie (2022) as Ton-Rak “Ton” and Your Sky (2024) as Dom, before being cast in Love Upon a Time.
  • In Love Upon a Time (2026) he plays Chuay, Klao’s manservant, opposite March Manussita Jarusasi as his on-screen wife Sai.
  • Sources disagree on the romanisation of his given name: TMDB and Domundi promotional material use Piamchon, while other records file him as Piamchol; the Thai spelling เปี่ยมชล is consistent across all of them.

EDUCATION

Studied at Thammasat University. Sources that specify the faculty place him in the Faculty of Law, taking a bachelor’s degree; other profiles record only the university without naming the faculty. No secondary school is publicly recorded.

FREQUENTLY ASKED QUESTIONS

Who is Tonnam Piamchon Damrongsunthornchai?

Tonnam Piamchon Damrongsunthornchai (Thai: ต้นน้ำ เปี่ยมชล ดำรงสุนทรชัย), born October 2, 1996, is a Thai actor, singer and rapper. He is known for Why R U? (2020), Cutie Pie (2022), Triage (2022) and for playing Chuay in the 2026 Domundi TV historical BL series Love Upon a Time.

How old is Tonnam Piamchon?

Tonnam was born on October 2, 1996, which makes him 29 years old as of August 2026. His Western zodiac sign is Libra and his Chinese zodiac sign is the Rat. The date is consistent across the credit records, ShareRice, Viki and Thai idol profile databases.

Who does Tonnam play in Love Upon a Time?

He plays Chuay, the manservant attached to Nakun “Klao” Phattanatada in the Ayutthaya-era timeline. Chuay moves between the noble household and the village, which puts him among the first to sense that the man wearing Klao’s face is not really Klao.

What is Tonnam's real name?

His legal name is Piamchon Damrongsunthornchai (เปี่ยมชล ดำรงสุนทรชัย). “Tonnam” (ต้นน้ำ) is his nickname and the name used in professional credits. The nickname means “headwater”, the source of a stream.

Was Tonnam in a boy group?

Yes. He was a member of KissBoysTH, a five-member Thai project boy group formed through a reality format. It debuted on May 21, 2019 and disbanded within the same year. The other members were Jo, Mean, Saint and Peak.

What was Tonnam's position in KissBoysTH?

He was one of the group’s vocalists and its rapper. Because KissBoysTH lasted less than a year, his music work stayed a secondary credit, but it is the reason databases list him as actor, singer and rapper rather than actor alone.

What did Tonnam study?

He studied at Thammasat University in Bangkok. Sources that name the faculty place him in the Faculty of Law, taking a bachelor’s degree. Other profiles record only the university. That makes him one of very few law graduates working on the Thai BL circuit.

What was Tonnam's debut work?

His screen debut was a guest role as Mixer in Make It Right 2 (2017). That came two years before his KissBoysTH debut, meaning he was acting before he was an idol rather than the other way round.

What series has Tonnam been in?

His series credits include Make It Right 2 (2017), Why R U? (2020), Until We Meet Again, Love in the Air, Triage (2022) as Dr. Singharat, Cutie Pie (2022) as Ton-Rak, It’s Ok to Be 30 (2023) as Chanin, Your Sky (2024) as Dom, Investigation of Love Season 2 (2025) as Khomkrit, The Thirsty 30 (2025) and Love Upon a Time (2026) as Chuay.

What films has Tonnam appeared in?

He played Itt in My Sexdoll (2020) and Disco in Make Money (2020), both lead roles, appeared in Love and Run (2019), and took a guest role as Hia in Dinosaur Love: The Movie (2023).

Has Tonnam worked with Domundi TV before?

Yes. He appeared in Cutie Pie (2022) as Ton-Rak and Your Sky (2024) as Dom, both Domundi TV productions, several years before Love Upon a Time. That existing relationship with the studio is the likeliest route by which he was cast in the 2026 series.

Where is Tonnam from?

He was born in Bangkok, Thailand, on October 2, 1996, and is Thai by nationality. Bangkok is also where he attended university.

How tall is Tonnam Piamchon?

His height is not published. No agency profile, database entry or interview located for this page gives a height, weight or blood type for him, so BLGLFLIX leaves those fields blank rather than repeat an unsourced figure.

What is Tonnam's Instagram?

His Instagram is @tonnaaam, at https://www.instagram.com/tonnaaam/. He uses the same handle on X. A YouTube channel under the name TONNAAAM also carries food-review content.

Is Tonnam a singer?

He is credited as a singer and rapper because of his KissBoysTH membership, but he has no solo discography and no verified solo artist page on any streaming service. His music work is tied to that 2019 group rather than to an ongoing recording career.

What is Tonnam's MBTI type?

No MBTI type has been published for him. BLGLFLIX does not assign personality-test results that the subject or their agency has not made public, so the field is left blank.

Who plays Chuay's wife in Love Upon a Time?

Sai, Chuay’s wife in the Ayutthaya-era timeline, is played by March Manussita Jarusasi. The two characters appear together across the series as part of the household surrounding Klao.

How do you spell Tonnam's name correctly?

The Thai spelling เปี่ยมชล ดำรงสุนทรชัย is consistent everywhere, but its romanisation is not. TMDB and Domundi promotional material use Piamchon Damrongsunthornchai, while other records file him as Piamchol Dumrongsoontornchai. BLGLFLIX uses the TMDB and production-credit spelling.

Is Tonnam in a relationship?

BLGLFLIX does not publish relationship claims that the subject has not confirmed publicly. Reports circulating on entertainment aggregator sites about his private life are not independently verified and are therefore not reproduced here.

What is Tonnam working on now?

As of August 2026 his most recent broadcast credit is Chuay in Love Upon a Time, which finished its Workpoint TV run on June 12, 2026. He also appeared in Investigation of Love Season 2 and The Thirsty 30 during 2025.

Written and verified by Renkaze · Last updated 30 August 2026

Biographical details and any photograph on this page come from TMDB and the sources named in our editorial notes. This product uses the TMDB API but is not endorsed or certified by TMDB. BLGLFLIX is an independent reference site with no affiliation to the person profiled or their agency, and does not publish speculation about anyone’s private life. Full copyright, correction and takedown policy: Disclaimer.

Sources

Every factual claim on this page is taken from the records below. Where two sources disagree, the disagreement is stated in the text rather than resolved silently.

Sources consulted: The Movie Database (TMDB), ShareRice Wiki (AFN), KProfiles, Rakuten Viki, Siamzone, Moviefone, Plex, TV Time and iQIYI. FlixPatrol was consulted and rejected on the birth date.

This product uses the TMDB API but is not endorsed or certified by TMDB.

BL & GL Flix

Your home for Boys' Love (BL) & Girls' Love (GL) dramas — trending titles, cast & couples.

Menu

Titles Actors Couples News Fan Mood Board

Legal

About Us Privacy Policy Terms & Conditions Disclaimer DMCA / Copyright Cookie Policy

Connect

Spotted a mistake or want a title added? Email us and we'll fix or add it.

info@blglflix.com Contact Us

© 2026 BL & GL Flix. All rights reserved.

BL & GL Flix is an independent fan site for entertainment purposes. All posters, images, logos, and trademarks are the property of their respective owners and are used for identification and commentary only. See our Disclaimer & DMCA.

Metadata and images courtesy of TMDB. This product uses the TMDB API but is not endorsed or certified by TMDB. All posters, portraits, cover art, and promotional materials remain the property of their respective copyright holders and are shown solely to identify the works described. BLGLFLIX does not host or distribute any video content. See our DMCA / Copyright Policy.