Moo Klot Atthaseri

Moo Klot Atthaseri (Thai: หมู กลศ อัทธเสรี; born September 14, 1958) is a Thai actor and singer whose screen career spans more than three decades. He plays Songphon in the 2026 revenge thriller Payback, appearing across all ten episodes, and at 67 he is the oldest member of that production’s principal cast by a margin of some twenty-six years.

His documented filmography begins in 1992 with the comedy Somsri #422 R., in which he played Udom, a role he returned to for Somsri 3 in 1995. The early 1990s produced a run of feature work, Hero Haew (1992), Crazy Me (1993) as a Death Angel, High School Life (1994) as Wan’s father, establishing the pattern that has held since: character parts, frequently fathers, uncles and figures of authority, across an unusually large number of productions.

He has also worked in voice: he played King Upracha in the animated feature The Blue Elephant (2006). His television work is where the volume sits, and it is substantial. Rai Rissaya (2007) ran eighteen episodes with him as Payut; Chaat Payak (2016) twenty-eight; Wicked Angel (2018) nineteen as Pairoj; Awaiting Bride (2018) twenty-eight as Riam’s father; The Messenger (2021) twenty-four; and Nak (2023) twenty-five as Ta Yong. Credit databases list him across more than a hundred Thai dramas.

His most prominent leading role came in the 2008 horror-comedy Baan Phee Phop, in which he played Klein. The 2020s have kept him in steady demand: The Empress of Ayodhaya (2024), Love in the Moonlight (2025) and Payback (2026) fall inside three consecutive years, and the last of these puts him in a contemporary BL production alongside a cast mostly in their twenties.

Sources romanise his name several ways. TMDB and the Thai credits give Klot Atthaseri, while other records file him as Claude Athaseri and Wikidata as Klos Utthaseri; his Thai nickname is Moo (หมู), and English Wikipedia’s Payback article uses the Claude form. He is a Virgo, born in the year of the Dog. No agency, height, weight or blood type figures have been published for him, and he maintains no verified public social media account, so those fields are left blank.