Seth Green Changing His Name

TMZ has obtained the petition filed by the "Robot Chicken" producer in L.A. County Superior Court this month -- asking a judge to legally shorten his name to Seth Benjamin Green.

Seth claims the reason for the name change is "to reflect my professional stage name."

Now -- just like Mr. World Peace -- Seth is required to print a public declaration of his new name in a local newspaper once a week ... for 4 weeks in a row.