 Kenneth " Kenny " McCormick ( sometimes spelled as McKormick ) is a main character in the animated adult television series South Park , along with his friends Stan Marsh , Kyle Broflovski , and Eric Cartman . His oft @-@ muffled and indiscernible speech — the result of his parka hood covering his mouth — is provided by co @-@ creator Matt Stone . 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 Stone and long @-@ time collaborator Trey Parker in 1992 ( Jesus vs. Frosty ) and 1995 ( Jesus vs. Santa ) . 
