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Terrance Mephesto

Terrance Mephesto is a minor character introduced in "An Elephant Makes Love to a Pig". He is a student at South Park Elementary and the son of the owner of South Park Genetic Engineering Ranch, Dr. Alphonse Mephesto.


Terrance Mephesto played his only significant role in his debut episode, having been quickly transitioned to a generic background character in later episodes. Terrance, along with his friends, Bill Allen and Fosse McDonald, were apparently supposed to be the rival group for the boys before Craig's group, although playing that role in only one episode.

In his debut in "An Elephant Makes Love to a Pig", he rivals the boys after Kyle comes up with the idea of making a small elephant for the science fair. Terrance comes up with the idea of making a human clone to beat the boys at the science fair, with the help of his friends, Bill and Fosse. After showing the boys a clone of a live human foot, he turns to his father, Dr. Mephesto, in order for him to create a full human clone. The result is a dangerous mutant clone, which is released by Terrance after he opens his cage. After his father gets rid of the mutant clone, Terrance borrows one of his creations, the Four-Assed Monkey, to show at the science fair in place of the human clone, and nearly wins the first prize before the boys present a pig similar to Mr. Garrison.

Terrance never played a major role in the series after his debut, serving only as a background prop, however he still played some minor roles in episodes after Season Four, such as in "Scott Tenorman Must Die", where he is among the students called by Cartman to help get revenge on Scott Tenorman, and "Raisins", where he replaces Stan on the boys' football team during his absence.

After so long being used as a background character, Terrance was finally remembered in the two South Park games, South Park: The Fractured But Whole and South Park: Phone Destroyer, although he was planned to appear earlier in South Park: The Stick of Truth.

Video Games

South Park: The Stick of Truth (Cut Content)

Terrance was planned to appear in the game as an acquired friend on Facebook, but ended up getting cut along with several other characters. It is unknown what his role would be in the game. His friend icon can be found in the game files. He had the same eyebrow models from Damien on his icon in an old game build. It is also called "Terrence" in the game files.

South Park: The Fractured But Whole

In the quest "The Many Asses of Dr. Mephesto" Terrance is revealed to have been killed by Barbra Streisand in her attack on the town during the events of "Mecha-Streisand", with several of his genetic mutations being seen in his father's laboratory. Mephesto stated that he would let his son rest in peace when asked if he planned to revive him.

South Park: Phone Destroyer

Terrance has his own Rare card in the game, being a Ranged type. His character was also used during character creation, being seen walking in the background with Kevin in Mephesto's lab.


Terrance has medium-length combed brown hair and notably angry, ragged, spiky eyebrows, as well as a prominent chin. He wears a purple coat with yellow suspenders over a white shirt with a black tie, and orange pants with black socks. Unlike Bill and Fosse, Terrance's unusual eyebrows remained after Season Four, albeit in a non-permanent form.

To see images of Terrance Mephesto, visit Terrance Mephesto/Gallery.


Terrance appears to have an abrasive personality, actively seeking out conflict in "An Elephant Makes Love to a Pig". He also appears to be incredibly arrogant and self-centered; when his father warns him about the danger his clone poses to the people of South Park, he exclaims "They're all stupid anyway!". Terrance also disparagingly calls the other boys "dumbasses" and Kyle a "plebeian", showing his arrogant demeanor. Each of these insults suggests he believes himself to be more intelligent than his classmates.


Dr. Alphonse Mephesto

In "An Elephant Makes Love to a Pig", Terrance is shown to greatly admire his father for his inventions and praises him after creating a human clone for his science fair, though they fall out when his son disobeys him, releasing the clone after he suggested getting rid of it after realizing it was too dangerous. Mephesto however, still offers his son one of his creations to present at the science fair.


Bill Allen and Fosse McDonald

Terrance is accompanied almost constantly by Bill and Fosse in "An Elephant Makes Love to a Pig". The pair are assumed to be part of Terrance's cabal, but they have yet to appear as a group since. Terrance was quite clearly the brains of the group; Bill and Fosse did nothing but follow him around.

The Boys

In his debut episode, Terrance, Bill, and Fosse appeared as a group rivaling the boys, betting that they could clone a human before the boys could crossbreed an elephant and a pig. His group's role as a rival to the boys was usurped by Craig and his gang in later episodes.



Although Terrance faded from prominence very quickly, he still makes occasional background appearances.


Video Games


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See also
List of Female 4th Graders | List of Male 4th Graders | Portal:Characters