The Magical World of Disney
1954
Wallace Maynard Cox was an American actor. He began his career as a standup comedian and then played the title character of the popular early U.S. television series Mister Peepers from 1952 to 1955. He also appeared as a character actor in over 20 films and dozens of television episodes. Cox was the voice of the animated canine superhero Underdog in the Underdog TV series. Wikipedia