I can think of one other actor's shoes (heh) that Bozo the clown could've stepped into successfully-- Roger Davis'. Particularly as lawyer Peter Bradford.
* After having consumed Prof. Stokes' "special" herb, the young man realizes that he is Bozo Bradford. Suddenly a baton appears in his hand and he begins marching around the room followed by a merry band, a group of excited children, and some just as excited animals. Vicki bursts into the room and, ecstatic, immediately hugs him. "Oh, Bozo!"
i noticed that frids appearance was from a bozo show in michigan. i thought bozo originated from chicago with larry harmon playing the part? perhaps local stations around the country had their own versions with their own hosts.