Mohammed Amer as Mo Dave Merheje as Ahmed Stephen Way as Stevie, the longtime friend and coworker of Ramy. They become acquainted after the September 11th attacks, when Ramy is alienated due to his Muslim faith.[3] Hiam Abbass as Maysa Hassan May Calamawy as Dena Hassan, the sister of Ramy. Although she is a graduate student, Dena is frustrated that her actions and behavior are still restricted by her overprotective parents.