Rainforest Schmainforest - S3-E1
Continuity mistake: A little while after Cartman leaves the group and finds the construction zone, we see a frontal view of the rest of the group. Cartman is still in it. (00:16:35)
The Succubus (a.k.a. Chef's Mama) - S3-E3
Continuity mistake: Kenny's head is completely smashed when he is attacked in the church during Chef's and the succubus' wedding, but it is whole again when Cartman brings it to the optometrist to get an eye transplant.
The Succubus (a.k.a. Chef's Mama) - S3-E3
Continuity mistake: When Stan, Kyle and Kenny go to Chef's house to tell him about Veronica, they can't talk to him so they sit down opposite Chef's parents. When Kyle says, "We have to talk to him," he and Stan have swapped places.
Cat Orgy (1) - S3-E7
Continuity mistake: In the episode "Cat Orgy" when Sheily's boyfriend, Sklar, are playing the song for Sheily while Cartman is hanging on the coat rack you can see of what looks like a picture of Cartman's grandparents hanging on the wall. But when Sheily walks over and flings Cartman up into the ceiling for arguing with her, look at the wall, the picture is completely gone.
Cat Orgy (1) - S3-E7
Continuity mistake: When Shelley chucks Cartman into the wall for arguing with her, the wall cracks. But later on in some shots the cracks have gone.
Cat Orgy (1) - S3-E7
Continuity mistake: Just before Cartman sends his kitty out of the window with the photo, there's a photo frame on his desk and a "Cartman" cutout tacked above the desk, and on his bed is his frog toy and his hat. When Cartman walks over to the window with the kitty, all these items have vanished.
Cat Orgy (1) - S3-E7
Continuity mistake: When Cartman is playing "Wild Wild West" with his toys, he has a female doll tied to a piece of wood on his bedside table. Then after his mom comes in and leaves again, Cartman starts dancing, and suddenly the doll has appeared behind him, and is also off of the wood.
Cat Orgy (1) - S3-E7
Continuity mistake: When Cartman gets his kitty the catnip from under the kitchen sink, a yellow plate rack full of plates appears on the worktop next to the sink that wasn't there in previous shots.
Cat Orgy (1) - S3-E7
Continuity mistake: When Shelley and Skyler are in the kitchen, there's a plate on the table with pizza crusts on it. Between closeups and wide shots the crusts continually switch from the left to the right side.
Cat Orgy (1) - S3-E7
Continuity mistake: When Shelly and Skyler are on the couch kissing, Skyler's guitar is on the couch. Then Cartman quickly snaps a picture of them, and then only a second later, the guitar is suddenly on the floor without enough time for it to be moved.
Two Guys Naked in a Hot Tub (2) (a.k.a. Melvins (2)) - S3-E8
Continuity mistake: In the scene where the ATF fires at the group of people coming out of Mr. Mackey's party, they drop dead. A few shots later when the ATF aims the big gun at the door, the bodies and bullet holes in the house are gone. (00:18:40)
Chinpokomon - S3-E11
Continuity mistake: At the toy store, Stan shows Cartman the three Chinpokomon he is buying: Lambtron, Roostor, and Shoe. When Stan's mother is at the cash register paying for his toys, though, she has a different Chinpokomon and Pingin. At the bus stop the next day, he has yet another different Chinpokomon.
Hooked on Monkey Fonics - S3-E12
Continuity mistake: When Mark rolls into the class in his bubble, he hits Craig's desk and Craig looks annoyed at him. In the next shot, he isn't looking annoyed. (00:08:05)
Starvin' Marvin in Space! - S3-E13
Continuity mistake: The second time the boys go through the wormhole you can see that Kenny is with them, even though he is still meant to be on earth.
The Red Badge of Gayness (a.k.a. War) - S3-E14
Continuity mistake: In the episode with the new civil war, when Clinton unrolls the scroll, it goes from rolling horizontally to rolling vertically between shots.
Worldwide Recorder Concert - S3-E17
Continuity mistake: In the episode with the recorder concert. When Cartman and Kenny come into the hotel room, saying that they've found the "brown noise", Cartman is wearing headphones and holding another pair in his hand. Then he suddenly has two extra pairs - he gives one to Kyle and one to Stan (and is still wearing one himself).
Worldwide Recorder Concert - S3-E17
Continuity mistake: When the boys are running to stop the concert a frame is seen where Mr Garrison and Mr Macky are saying "are those our boys" and though the previous frame showed the gang of 4 running to the stage. Stan and Kyle's hat can be seen standing next to the teachers.
Answer: He appears in at least 5 other episodes, but usually just as a background character. He can be seen at Cartman's party in "Immaginationland". He was also one of the kids trying out to replace Butters in the "Professor Chaos" episode.
Bishop73