O-Negative: Cast
Tata Young
Prim
Ray MacDonald
Art
Shahkrit Yamnarm
Puen
Sriphan Chunechomboon
Chomphu
Penpak Sirikul
Prim's Mother
Thamapat Seengamrat
Foon's Father
Thorung Jarungkijanan
Foon's Mother
Praphot Mayura
Puen's Father
Duangdao Jarujinda
Puen's Mother
Chayaporn Bunnag
Auan
Tharawit Chittjai
Ong-art
Siranat Ratchusanti
Mekin
Soisuda Kokpong
Nian
Arun Wacharasawat
Ong-art's Father
Kumaree Chinnawat
Ong-art's Mother
Duangkamol Limcharoen
Editor
Savitree Puthakaya
Prim's Aunt
Vanich Charungkitanan
Lecturer
Kerkkrai Unsonthi
Dean