Gunsmile Chanagun Arpornsutinan is a mixed Thai-Chinese actor, singer, and musician born in Bangkok, Thailand to a Chinese father and a Thai mother. He studied high school at the Suankularb Wittayalai School.

When he was younger, he studied to become a soldier. He then switched to becoming a lawyer, before enrolling at Bangkok University in the department of Communication Arts. In 2019, he completed a Bachelor's degree at the Department of Radio and Television Broadcasting at the Faculty of Communication Arts of Bangkok University with second-class honours.