There are very few South Park characters who can claim to be as instrumental to the show’s success as Eric Cartman. ”, the 300th episode of South Park, established that Cartman never received any of his vaccinations because he has an extreme phobia of needles. ”, several South Park episodes showed Cartman using needles for various purposes. However, the way that South Park uses this to affect the character’s physical capabilities varies wildly from episode to episode. Of course, South Park has seen Cartman go to jail several times throughout its run, but he’s never incarcerated for long.