Thunska Pansittivorakul was born in BKK. He graduated from the Department of Art Education, Faculty of Education of Chulalongkorn University. He won the Grand Prize award at The 4th Taiwan International Documentary Festival in 2004 for his documentary feature 'Happy Berry'. His 'Heartbreak Pavilion' project won the Top Award from Pusan Promotion Plan (PPP) at The 10th Pusan International Film Festival in 2005. In 2007 he received the Silpatorn Award from The Ministry of Culture's Office of Contemporary Arts. He has also worked as a columnist for 'Bioscope' and other magazines.

In early 2009, Thunska met Jürgen Brüning, a German producer. Together they produced 'The Terrorists' (2011) which had its world premiere at the 61st Berlinale, and Supernatural (2014) which had its world premiere at the 43rd International Film Festival Rotterdam. In 2012, Thunska founded Sleep of Reason Films to make personal films, which often involve attacking human rights violations and Thai propaganda, at the same time refusing to submit to the Thai State's censorship system.

 In 2012 he founded a production company base in BKK, SLEEP OF REASON FILMS.

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SLEEP OF REASON FILMS is founded by Thunska Pansittivorakul to produce films he believes in. They are films that are made by digital video and that challenge the government's control such as censorship, human right violation and the erasing of historical memory. Their film will use raw-style, documentary-like storytelling and will oppose conventional style of narration. The name 'SLEEP OF REASON' is from Francisco Goya's etching called 'El sueño de la razón produce monstruo' which means 'The Sleep of Reason Produces Monsters'.