Question: "The Poor Kid" is the fifteenth season finale of a series created by who ?
Related documents: [0]  [DOC] "The Poor Kid" is the fifteenth season finale of the American animated television series "South Park", and the 223rd episode of the series overall. It first aired on Comedy Central in the United States on November 16, 2011. In the episode, Kenny and his brother and sister are sent to a foster home after police discover a meth lab in their house. As a result, Cartman is left with feelings of loss, since he no longer has someone to ridicule for their poverty. [END] 
[1]  [DOC] South Park is an American adult animated sitcom created by Trey Parker and Matt Stone and developed by Brian Graden for the Comedy Central television network. The show revolves around four boys—Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormick—and their bizarre adventures in and around the titular Colorado town. Much like "The Simpsons", "South Park" uses a very large ensemble cast of recurring characters and became infamous for its profanity and dark, surreal humor that satirizes a wide range of topics towards a mature audience. [END] 
Answer: 
Trey Parker and Matt Stone
Trey Parker and Matt Stone