The boy in blue is a child who lives in Gravity Falls, Oregon.
In "Land Before Swine," the boy appears on an outdoor Mystery Tour on the Mystery Cart, led by Grunkle Stan. Later, he and numerous other tourists are amused by the Mystery Shack's indoor attractions, before feeling ripped off after Waddles has eaten the Cornicorn.
In "The Stanchurian Candidate," he is seen listening to Stan's radio interview.
The boy is short and has fair skin and short, light brown hair. He has visible eyebrows, a small nose, freckles, and noticeable cheeks. He wears a striped, blue t-shirt, pale green shorts, white socks, and brown shoes.
- 118. "Land Before Swine"
- 5. "Tooth"
- 16. "Mabel's Scrapbook: Heist Movie" (no lines)
- 17. "Mabel's Scrapbook: Petting Zoo" (no lines)
- 203. "The Golf War" (no lines)
- 205. "Soos and the Real Girl"
- 208. "Blendin's Game" (no lines)
- 214. "The Stanchurian Candidate" (no lines)
- 220. "Weirdmageddon 3: Take Back The Falls" (no lines)
"Could I go to the bathroom?"
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