Jack Grimes
Jack Grimes (April 1, 1926 – March 10, 2009) was an American actor who played Jimmy Olsen in the last three years of The Adventures of Superman radio program, and the 1966 Filmation TV series The New Adventures of Superman. He is also known for his performance as the mechanic Sparky, and the pet chimp Chim-Chim in the 1967 anime Speed Racer.