A martial arts movie star is someone who has made a name for themselves by starring in films that feature the art of combat. Some synonyms that could be used to describe them include action hero, fighter, karate champion, kung fu master, ninja warrior, and wushu artist. These terms emphasize the physical and martial aspect of the performer's talent, while also hinting at their status as a cultural icon. Regardless of which synonym is chosen, all of them evoke a sense of excitement and admiration for the performer's skills and physical prowess.