A courtroom sketch and field-evidence style illustration showing the commercial-grade Grimace DJ inside the unknown San Juan warehouse on June 7, 2024. The scene is drawn from a low audience perspective, as if standing in the first few rows and looking up at the elevated DJ platform. Behind the decks, a classic rounded full-body Grimace mascot performs under heavy purple lighting, wearing comically large silver headphones with purple accents. The crowd faces the stage from below while speakers, lights, and rave production elements surround the booth. The image uses loose graphite and ink lines, subtle watercolor wash, textured paper, selective purple accents, and documentary reconstruction details to capture the moment the narrator first suspected the event might be an underground McDonald’s marketing activation.