Continuity mistake: Butters' dad's first name changes from Chris to Steve as the series progresses.
Character mistake: When Kyle looks at Baahir Hakeem's MySpace page, not only is his name at the top misspelled as "Bahir Habeem," but on other parts of the page, his name is listed as "Mohammed Lamed." (00:02:13)
Make Love, Not Warcraft - S10-E8
Continuity mistake: During the leveling up montage, we see a shot of the boys playing at school. The shot from the front shows the boys as normal, but the previous shot of them from behind shows them in their fatter post-leveling shape.
Factual error: Kyle says he has to log on before school. The next shot shows "Monday 8 days later." 8 days before is a Sunday. (00:04:45)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: In the classroom there is a poster of The Laughing Cavalier in the back wall in the class. In the last shot of that scene you can notice that the poster has disappeared and is replaced with an astronaut poster. (00:09:05)
Woodland Critter Christmas - S8-E14
Continuity mistake: The narrator says that it's "Christmas Eve day," but then the abortion doctor says that it's "three days until Christmas."
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: Mr.Garrison's glasses change throughout shots, from a thin pair to a bold pair.
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: The stars keep changing position (especially the sparkly big one) when Cartman is tied to the tree. (00:18:05)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: In the classroom scene where Kyle tries to be excused from class to find Ike, Cartman sets Pip on fire as he was sitting just behind him to the the left. However in the previous shots Pip had not been sitting there, some other kid was and wouldn't have had enough time between shots to move. (00:09:05)
Other mistake: When the kids are playing "Carry On Wayward Son," there are no notes on the TV in the one area. However the boys play the notes there and get it right.
Make Love, Not Warcraft - S10-E8
Other mistake: Everyone in the entire game (including the Koreans) has no armor on except for the boys and their friends from school.
Continuity mistake: When we see Kenny from the front, the hole in his head exposing his brain appears on his left side, but when we see the top of his head when he is biting people, the hole is in the back of his head.
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: After Stan vomits from Wendy talking to him at school, the vomit disappears in a few shots. (00:10:55)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When the boys are first seen in the cafeteria, Stan is in front of Cartman. When Kyle says, "Hey look, there's Wendy Testeburger." in the next shot, Stan is now behind Cartman. (00:10:05)
An Elephant Makes Love to a Pig - S1-E6
Continuity mistake: When the boys are standing in a group, Kenny disappears after a while, then Stan disappears, but then a second later, they are all back together.
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)
Continuity mistake: After Mr Garrison announces Kathie-Lee will be presenting an award for Cartman, you see the next scene in the Mayors office. There we can see cleary the curtains are red, then she looks out the window and looking in the office from outside, they are pink, but it goes in the office again and now they are back to red.
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.
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