Mitch Conner

Mitch Conner (AKA Jennifer Lopez) is... well, Eric Cartman 's hand, given a personality and backstory. He appears in Fat Butt and Pancake Head and again in 200.

History
When Cartman is required to give a report on the effect of Latino culture on the arts in America. He says he has a special guest, Jennifer Lopez. However, Jennifer Lopez does not show up, Cartman merely does a ventriloquist act with his hand acting as the head of "Ms. Lopez". The racism of Cartman's report is quite obvious and upfront. His "Ms. Lopez" hand puppet has a heavily caricatured Mexican accent and constantly talks about eating tacos and burritos which are Mexican dishes despite the fact that Jennifer Lopez is Puerto Rican. "Ms. Lopez" is also nearly incapable of pronouncing the "J" in her name (which Cartman tries to correct unsuccessfully). Despite this, the board of Hispanics give him first place for having the best report, and he wins a $20 gift certificate at the mall.

While at the mall, Cartman's hand demands to make a music video at a music store, which gets the attention of Hollywood Record executives. They proceed to hire "Jennifer" because she's supposedly younger and more attractive then the real Jennifer Lopez, who is furious at being replaced. When the Hand-Lopez then steals her then-boyfriend Ben Affleck, the real Lopez goes insane and attempts to murder both then hand and Cartman.

Caught between the psychotic Jennifer Lopez, Ben Affleck, the record excutives and the police, "Jennifer" reveals herself to be a male con-artist named Mitch Conners. Mitch confesses to playing everyone for chumps, before "killing himself" by "jumping" off a bridge (in truth, Cartman just opened his hand). Cartman explains that the whole thing with his hand taking on a personality was real, stating "Look, I don't care what you guys believe. But with all the crazy stuff that goes on in this town, isn't it possible, just possible, that something' I don't understand happened here?" When the others conceed that MAYBE there that it could be believable, Cartman reveals it all to be an elaborate prank he did to screw with Kyle, Stan and Kenny.

However, "Mitch/Jennifer Lopez" returns in 200. When the celebrities that South Park has wronged over the years plan to take revenge against South Park by filing a class-action lawsuit, Cartman appears amongst them with his hand again dressed up like Jennifer Lopez. Apparently the plan was to join in on the lawsuit to get money, but Cartman's hand instead wants to help the celebrities steal Muhammad's power of not being ridculed and sell on the blackmarket. When Cartman refuses to go along with it, Mitch tempts him with the truth of who Cartman's REAL father is.

Real, Prank, or Psychological?
During Fat Butt and Pancake Head, Cartman initially seems intent on just doing a comedic and insulting bit by doing a ventriloquist bit with his hand. However as the episode progress, Cartman begins to behave as if his hand is really a living being, arguing with it, and even doing things that he would normally never do, such as jerking off Ben Affleck on multiple occasions or allowing himself to be physically assaulted by Jennifer Lopez. This appears to be a psychotic break on Cartman's part, however he deems it as being something more than that when confronted by his friends. However at the end of the episode, he states it to be an elaborate prank, implying nothing more than that Cartmans' endless wiliness to screw with his friends.

However in 200, Cartman begins doing the Mitch Conner/Jennifer Lopez bit again. However unlike last time, he seems more driven by money, and his friends have absolutely nothing to do with his plan or even interact with him and Mitch. Cartman against proceeds to have arguments with the hand, and it seems that the hand has knowledge of things that Cartman does not, such as the truth about his father. The fact that Cartman's hand is acting more independently and has knowledge Cartman lacks, suggests that either Cartman has gone completely insane, or that like Mr. Hat, Mitch Conners may in fact be somewhat sentient on his own.