Best Nathasit Kotimanuswanich is an actor and DJ. He graduated from the Faculty of Innovation in Social Communication a Strinakharinwirot University majoring in film design.

In 2010, Best debuted in acting when he starred in the MV for the song 'Khon Thi Khaojai' (คนที่เข้าใจ) by Nogolo. Years later, The MV's director, Kongdej Jaturanrasamee, asked him to audition for his upcoming film 'Tang Wong' (2013). For that role, he won Best Actor at the 23rd Suphannahong National Film Awards. In 2016, Best became particularly well-known for the viral MV 'Aow' (อ้าว) by Atom Chanakan, costarring with Jomjam Suphitcha. The two went on to work together a second time in the 2019 drama 'Fleet of Time'.

Outside his acting career, Best works behind the scenes in the creative production house Showa Showa.