The Boy with C Cap is a background character in South Park. He occasionally appears in the background throughout the show, mostly in large crowds, at parties, field trips, or in the school hallways. He appears in the background of "Tweek vs. Craig", watching the fight between Tweek Tweak and Craig Tucker. In "Funnybot" he is seen sleeping in Jimmy Valmer's comedy awards.
His name remains unknown and he has yet to have any speaking roles.
He wears gray-brown pants, black shoes, a blue button-down shirt with a collar, red gloves, brown hair and a red baseball cap with a black brim and the letter C on it. Sometimes in his cameos, the C on his cap is missing.
- "The Succubus" - He is seen eating in the lunchroom.
- "Tweek vs. Craig" - He is shown watching the fight.
- South Park: Bigger, Longer & Uncut - He is seen at the theater seeing the Terrance and Phillip movie.
- "Hooked on Monkey Fonics"- Seen at the dance.
- "The Red Badge of Gayness" - Seen in Topeka, Kansas.
- "Cartman's Silly Hate Crime 2000" - Seen in the crowd at sled race.
- "Fourth Grade" - Seen in South Park Elementary.
- "A Very Crappy Christmas" - Seen exiting his house to go watch the spirit of Christmas.
- "Scott Tenorman Must Die" - Seen watching the Radiohead Interview and the Little Piggy Video.
- "Terrance and Phillip: Behind the Blow"
- "Cartmanland" - Seen having fun in the theme park.
- "Proper Condom Use" - Seen in the South Park Elementary Cafeteria.
- "How to Eat with Your Butt" - Seen in line to take a school picture.
- "Butt Out" - He is shown watching the Butt Out program.
- "Raisins" - Shown eating at Raisins.
- "Stupid Spoiled Whore Video Playset" - He is seen at Bebe's party.
- "Smug Alert!" - Seen at Kyle's going away party.
- "ManBearPig" - Seen in the auditorium.
- "Make Love, Not Warcraft" - Seen in the playground.
- "With Apologies to Jesse Jackson" - Background only.
- "Le Petit Tourette" - Seen at the toy store.
- "Imaginationland" - Seen at Cartman's party.
- "Eek, A Penis!" - Seen in hallways; background only.
- "Super Fun Time" - Seen as Tweek Tweak's partner at the field trip.
- "Breast Cancer Show Ever" - Seen watching the fight; background only.
- "Crème Fraiche" - Seen waiting for lunch.
- "City Sushi" - Seen in assembly.
- "Cartman Sucks"-Seen talking to Heidi Turner in the hallway.
- "1%" - Seen in the gym.
- "Faith Hilling" - Seen in the memeing class with the other 4th grade students.
- "Butterballs" - Seen in the background in the cafeteria, at the school assembly, and Stan's anti-bullying music video.
- "Raising the Bar"- Seen in the Gym when the kids are playing basketball.
- "Going Native" - Seen eating in the cafeteria.
- "Grounded Vindaloop" - Seen from behind in the hallway.
- "Funnybot" - Seen in crowd in the gymnasium.
- "Gluten Free Ebola"- Seen in the gymnasium.
- "Member Berries"- Seen at the volleyball game.
- "Wieners Out" - Seen in the school cafeteria.
- "Douche and a Danish" - Seen making danishes in the school cafeteria.
- "Let Them Eat Goo" - Seen in the cafeteria.
- "The Pandemic Special" - Seen in quarantine at school with the other students.
- Early in the show's run, he was known by fans as "Redcap". Nowadays, he is mostly referred to as just "C Cap".