Katie Leung: Katie Leung. Actress: Harry Potter and the Order of the Phoenix. Katie Leung began her career when she was cast as Cho Chang in the Warner Brothers feature film Harry Potter and the Goblet of Fire, a role she subsequently reprised for Harry Potter and the Order of the Phoenix and Harry Potter and the Deathly Hallows (Part II). Alongside her acting career, Katie has trained at the Royal Conservatoire...