Proper performed as The Banana Man in the Broadway musical Jumbo, in the short film Seeing Red starring Red Skelton, and in the 1947 feature film Mother Wore Tights starring Betty Grable.
The actor portrayed The Banana Man in the Broadway production of Jumbo, made a cameo in the short film Seeing Red with Red Skelton, and had a leading role in the 1947 movie Mother Wore Tights starring Betty Grable.