Brimmy

The Boy with Blue Cap is a student at the South Park Elementary. He has remained a background character since the first season. Although he is a background character, he has an "advertisement" for the FAQ on South Park Studios.

Background
Despite having been the boys' classmate since 3rd grade, the closest time of his voice being heard was a short grunt of pain after being hit by a dodgeball in "Conjoined Fetus Lady". He can be seen yelling "Yeah!" in "Quest for Ratings", however, his voice is lost among the crowd. He appears as a background character numerous times throughout the show, especially in hallway scenes and on the playground.

Appearance
Boy with Blue Cap wears clothes that are very similar to Craig's usual garb, he wears grey trousers, a blue coat and a blue cap with a yellow brim. He appears in almost every episode up until Fourth Grade. Since then, his background appearances have slightly decreased. In the episode "Mr. Hankey, the Christmas Poo", a purple version of him is seen during Kyle's number, "The Lonely Jew on Christmas", then he appeared in his usual blue in "Damien". A green version could be seen in "Tonsil Trouble" shortly before Kyle and Cartman fight.

Prominence

 * "Damien"
 * "Faith Hilling" - Seen in the memeing class with the other 4th Grade students.
 * "Jewpacabra" - Seen at the Easter egg hunt.
 * "Butterballs" - Seen in the background in the cafeteria.