Samaritan Snare was a reflection of modern society. With that in mind, portly actors were hired in order to give the impression of Tweedledum and Tweedledee from Lewis Carroll's "Through the Looking-Glass". Makeup supervisor Michael Westmore then created a prosthetic design for the actors, intending to make them look "whimsical". Appliances were created for their cheeks, foreheads and the tip of the actor's noses. A further addition was the eyebrows, as Westmore wanted them to look permanently sad. The final step in the makeup process was the creation of sets of false upper teeth, which while Westmore suggested was not immediately noticeable
Unbirthday film combines the idea of an unbirthday introduced in "Through the Looking-Glass" with the "Mad Tea Party" described in "Alice's Adventures in Wonderland". The unbirthday party is also the subject of a 1951 comic released to coincide with the film. The comic version is substantially longer (32 pages) than the scene in the animated film, and has Alice being invited to the unbirthday party of Tweedledum and Tweedledee (who are not actually present at the unbirthday party). Humpty Dumpty is a character in the comic version, although not in the manner in which he appears in "Through the Looking-Glass". "UnBirthday"