Colonel Bird added that he had no idea about the movie at the time. When asked whether he ever wondered why he was chosen to portray King Naresuan — one of the greatest heroes of Siam’s history. However , Tan Mui once said jokingly that people referred to king Naresuan as Black Prince for a reason ,and that reason might be because he was very dark-skinned. Despite starring in each of the four blockbuster movies over the past decade, the colonel's army role has always been more important. He also admits that playing the role of an ancient warrior helped him learn about the battlefield hardships his predecessors endured. When asked whether acting or military training was more difficult , he replied that both acting and training require self-discipline