"Free Willzyx" (/ˈwɪlziæk/ WIL-zee-ak) is the thirteenth episode in the ninth season of the American animated television series South Park.
In the episode, which parodies the film Free Willy, Kyle, Stan, Cartman and Kenny go to an amusement park, where aquarium employees prank them into thinking the orca Jambu is telling them he needs to be sent back to the Moon where he truly belongs or else he will die; the prank backfires as the boys embark on a misguided mission to set him free.
While getting a closer look at Jambu, Kyle is surprised to hear the whale speak, unaware the voice is really coming from Brian, a show announcer, and his co-announcer Mike.
Rather than tell their colleagues about the prank and risk being fired, Mike and Brian decide that they must find the boys and retrieve Jambu before the police do.
Kyle, Kenny, Cartman, Butters and Clyde are on the road to meet Stan and Craig in Tijuana to get the whale home when Brian and Mike stop their truck.
However, the ALF comes to their rescue as the whale is saved in a hail of gunfire, killing Mike, the police officers and possibly the truck driver the boys hired.
The ALF leader drives the van for the boys as they resume their trip to Tijuana, while Brian sadly exclaims to a dying Mike the past times were always funny.
According to the DVD commentary, "Free Willzyx" was a "very last minute" episode because the season was nearing its end and Trey Parker and Matt Stone had "no ideas".
[3] In the episode, when the two park workers are looking for the whale, they show one of the boys' parents a realistically drawn sketch of Kyle, Cartman, Kenny and Stan.
[4] According to the South Park Studios FAQ, the model for Stan and Kyle was Nico Agnone, a voice actor who formerly worked for the show.