When I finished the outlines for the two introductions, I realized that I could write the scripts around the idea of delivering, denying, or delaying expectations.
In the villain introduction, we deliver expectations albeit in a comedic way. The mad scientist and his hunchback assistant will create the virus and raise an army of the dead. This is a direct reference to scenes of Dr. Frankenstein creating his monster, and we will even be doing shot for shot remakes to sell home this point. This introduction will give the audience a good sense of what to expect for the rest of the film, until it doesn't. How? Well the end of the villain introduction is the start of the hero introduction, contrasting horror sci-fi with a normal comedy scene.
The sudden switch in tone will add to the already comedic feel of the film.
This brings us into the hero introduction where depending on how much knowledge the audience already knows about the introduction, it can deny or delay expectations. Knowing nothing, it will deny expectations because what starts as a normal, comedic scene quickly shifts into horror with the arrival of a zombie and back to comedy. To those who know the zombie is coming, it will be delaying expectations until the very end of the scene.
The hero introduction starts in equilibrium and is almost like a sitcom in nature. The sudden shift to horror at the end throws the audience off until it just as quickly shifts back comedy.