Question: Kyle Broflovski is a central character along with which character voiced by and loosely based on series co-creator Trey Parker?
Sentence (from "Stan Marsh"): He debuted on television when "South Park" first aired on August 13, 1997, after having first appeared in "The Spirit of Christmas" shorts created by Parker and long-time collaborator Matt Stone in 1992 ("Jesus vs. Frosty") and 1995 ("Jesus vs. Santa").
Relevant evidence: No