Editing Terrance Mephesto (section)

===[[South Park: The Fractured But Whole]]===
During a tour of the main characters through the heavily revised [[South Park Genetic Engineering Ranch]], the elder Dr. Mephesto displays on the third floor of his residence a variety of horrifying mutations of his "dead son" on display, using them to illustrate that his technology could someday help human beings as well. He remarks that "most people don't remember that [he] once had a young child named Terrance" and explains that Terrance was killed tragically by [[Mecha-Streisand]] when some children in town were playing with a relic that belonged to [[Barbra Streisand]]. It seems suggested his efforts to refurbish the lab are related to bringing him back, but Mephesto insists that he has no intentions of this, only to give his son additional asses so he could rest in peace.

As Mephesto's ranch looks wildly different from the show, his assistant Kevin is not present, and Terrance has continued to appear in the background of episodes after its release, such as "[[Sons a Witches]]", as well as several episodes after his death is suggested to have taken place, these scenes are presumably non-canon. (see 'Death' below)