Michael Constantine
Michael Constantine (born Gus Efstratiou (Ευστρατίου); May 22, 1927 – August 31, 2021) was an American actor. He was known for his role as Kostas "Gus" Portokalos in the movie My Big Fat Greek Wedding (2002). He was also known for playing Principal Seymour Kaufman, on ABC's comedy-drama, Room 222, for which he won the Primetime Emmy Award in 1970.