Shrek Forever After is scheduled to hit theaters on May 21 and Dreamworks has been hard at work on the promos.

Check out some of the character posters below.shrek-where-my-witches-at-04shrek-where-my-witches-at-02The cast for Shrek will include: Mike Myers, Eddie Murphy, Cameron Diaz, Justin Timberlake, Antonio Banderas, Paul McCartney, Julie Andrews and Eric Idle.Can't get enough Shrek?They're on Facebook and don't forget HOLLYWIRE's on Facebook.[gallery]