Director-choreographer Rob Ashford has been brought aboard as an unbilled consultant on “Shrek the Musical,” which is playing its tryout run in Seattle.

Musical adaptation of the 2001 pic (and the William Steig book) is the first legit outing for DreamWorks Animation, which initiates a theatrical producing arm with the offering.

Ashford, the choreographer (“Curtains,” “Thoroughly Modern Millie”) who also has begun helming (“Parade” in London), will join a “Shrek” team that includes director Jason Moore (“Avenue Q”) and newcomer choreographer Josh Prince. Ashford had been skedded to direct and choreograph an upcoming Broadway revival of “Brigadoon,” but that production has been postponed.

Now in previews at the 5th Avenue Theater, “Shrek” opens Sept. 10. Last week, the production grossed around $830,000 of a $1.03 million potential.

Production opens in Gotham at the Broadway Theater Dec. 14.