[1][2] At a young age, Atthaphan entered the entertainment industry supported by his mother, who knew about her son's ambitions: 'Mommy, Gun wants to be on TV', he reminisced in an interview.

This folklore soap-opera was very popular when it aired and pushed Gun to become a known child actor at the age of nine to ten.

Particularly, it was in the field of cinema that Atthaphan started to stand out in the drama genre, where he was noticed in alternative productions such as Kongkiat Khomsiri's Slice (2009), a Thai thriller where a teenage Gun surprised audiences by portraying an abused child, subsequently being nominated for the Suphannahong National Film Awards and to win Best Supporting Actor at the 7th Chalerm Thai Awards (2010).

After signing with GMMTV in 2016, Gun gained prominence for playing Rome in 'Senior Secret Love: Puppy Honey' (2016) and its respective sequel alongside Jumpol Adulkittiporn.

The strong chemistry between the two led them to host web programs, to release the single 'Too Cute To Handle' and starring roles in the romantic drama 'Theory of Love' (2019).