Tui Chayatorn Trairattanapradit

Tui Chayatorn Trairattanapradit (Thai: ตุ้ย ชยธร ไตรรัตนประดิษฐ์; born March 24, 2004) is a Thai singer, songwriter, and actor, a member of the boy group LYKN signed to Riser Music, and an actor signed to GMMTV. He plays Thirawat “Beer” Chaemthai in A Dog and a Plane (2026), the GMMTV boys’ love series led by Tay Tawan Vihokratana and New Thitipoom Techaapaikhun.

He is an only child who began singing at age six or seven and took up dance around age fifteen. He studies at Srinakharinwirot University’s College of Social Communication Innovation, majoring in acting and film directing. He is a multi-instrumentalist, playing drums, piano and guitar, and is also known as a skilled beatboxer.

He placed third on GMMTV’s survival show Project Alpha, which led to his formation into LYKN alongside four other members. The programme ran for twelve episodes on GMM 25 from 4 December 2022 to 5 March 2023, and twenty seven trainees competed to earn a place on GMMTV’s roster. LYKN debuted on 5 May 2023 as a five member group made up of Nut, Hong, Tui, William and Lego. Within the group he contributes as a songwriter and producer; he wrote and composed the fan-song “LYKYOU” performed at LYKN’s first concert, and released his first solo original soundtrack, “From Now On,” in August 2024 for the series Kidnap. He made his acting debut the same year in ThamePo: Heart That Skips a Beat (2024 to 2025) as Pavee “Pepper/Per” Warisphol, a member of the series’ fictional boy band MARS, before joining the cast of A Dog and a Plane (2026).

ThamePo: Heart That Skips a Beat ran for thirteen episodes from 13 December 2024 to 7 March 2025 on GMM 25, Netflix and YouTube. In the story, Po is asked to document the final concert of a boy band before it disbands and ends up as the closest confidant of its leader, Thame, who is about to make his debut in South Korea. LYKN appears in the series as the band MARS, which gave the group a chance to perform as a fictional version of themselves on screen. A Dog and a Plane ran for ten episodes on ONE 31 from 29 May to 31 July 2026. Its story follows Khanit, a flight attendant, and Toto, a rescue worker who agrees to help him find out whether his boyfriend is being unfaithful.