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)
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)
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)
Cartman Gets an Anal Probe - S1-E2
Revealing mistake: When Cartman finishes talking about his nightmare in the beginning, Chef comes and you can see his hat poking out of the roof of the car. They couldn't really fix this because this episode was done out of construction paper. (00:04:10)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: The "School Food Is Good Food" poster in the cafeteria changes fonts between shots. (00:10:50)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When Cartman accidentally sets Fluffy the Cat on fire, it jumps up into the air and knocks over a picture and it falls onto the floor. When Stan, Kyle, Cartman's mom and Wendy walk into the living room in the next shot, the picture has disappeared. (00:17:45)
Cartman Gets an Anal Probe - S1-E2
Visible crew/equipment: When Chef is singing: "I'm gonna make love to you, woman!" A crew member's hand can be seen moving the character's head. This was later fixed in the DVD version, but it was not fixed in the original version.
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When at Stark's pond, the vomit by Stan's feet disappears. (00:16:00)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: The rock Kyle throws at the alien ship appears from nowhere. (00:14:00)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: On the bus, we see there is a shot of the bus with 4 kids visible on the left hand side. However, when Ms. Crabtree swerves, a 5th kid with black hair appears out of thin air. (00:06:50)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When Cartman is saying how the others are trying to scare him, you can see Kyle is not stood next to him. Camera cuts and now Kyle is there. (00:04:20)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: We see all the cows in a single line waiting for the train. When the camera changes they are all now in a herd. (00:09:30)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When the bus pulls up, a stop sign is visible on the bus. When Ike goes through the second bus window, the sign has gone. (00:05:10)
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