Alfredo Grassi (19 July 1925 - 17 August 2018[1][2]), credited by the pen name Fred W. Seymour, was the writer of Daleks, invasión a la Tierra año 2150, a licensed Argentinian adaptation of the theatrical film Daleks' Invasion Earth 2150 A.D., which was printed in the 400th issue of El Tony Extracolor.