Early during his nearly six-decade acting career, Edmiston became the replacement voice for Walter Lantz's animated character Wally Walrus, and for a time he did incidental voices and puppetry on the award-winning "Time for Beany" children's show in the early 1950s.
Edmiston also hosted his own children's program -- "The Walker Edmiston Show" -- on local channels in the 1950s and early '60s. The afternoon show featured puppets that Edmiston designed and made, Kingsley the Lion, Calli the Cat and Ravenswood the Buzzard.
For the Kroffts in the late 1960s and 1970s, Edmiston did numerous voices, including Dr. Blinkey and Orson the Vulture on "H.R. Pufnstuf," Sparky the Firefly on "Bugaloos," Enik on "Land of the Lost" and Sigmund Ooze -- and Sigmund's brothers Blurp and Slurp -- on "Sigmund and the Sea Monsters."