Season 1 of Whack-O! premiered on October 2, 1956.

10 Episodes airing from 10/04/1956 to 12/13/1956

Season 2 of Whack-O! premiered on October 1, 1957.

10 Episodes from 10/01/1957 to 12/03/1957

Season 3 of Whack-O! premiered on September 23, 1958.

7 Episodes from 09/23/1958 to 11/04/1958

Season 4 of Whack-O! premiered on May 12, 1959.

6 Episoders from 05/12/1959 to 06/16/1959

Season 5 of Whack-O! premiered on November 10, 1959.

6 Episodes from 11/10/1959 to 12/15/1959

6 Episodes from 05/13/1960 to 06/17/1960

6 Episodes from 11/22/1960 to 12/27/1960

13 Episodes from 11/27/1971 to 02/26/1972