Who is Bursitis from Without Feathers and what is their importance?

Bursitis is a Greek who is forced by Trichinosis to use the deus ex machina to play the role of Zeus in Hepatitis' play. The machine malfunctions and, rather than descending from the heavens as Zeus, Bursitis is instead accidentally killed. Bursitis's name is part of a joke throughout "God," where the author uses medical terms instead of Greek names.