Sam Asghari dreams of becoming a movie action hero. The 28-year-old star has recently sent taped auditions to Marvel Studios and Sam – who was born in Tehran, Iran – is determined to become a “positive role model for young Persian men”. A source close to Sam – who recently married pop star Britney Spears – told The Sun on Sunday newspaper: “Sam wants to play a positive role model for young Persian men, rather than the villains they are usually portrayed as. “He has been working on his screen fighting skills and has upped his training in mixed martial arts and undertaken stunt classes.” Sam sta…