The host or minion from Lights Out, my Rive Halloween game: :a pumpkin head on a body of roots, possessed by a ghost. The reel runs from the first bark-limbed sketch through the charred head (vector, drawn, 3D) to the green fire body. Everything after that is live Rive footage, not pre-rendered: the walk and the full turn are computed in Luau, the fog body is a WGSL shader in Rive's GPU Canvas, and when the host burns out, the ghost leaves the pumpkin. Claude Code agents wrote it through the Rive CLI, but only after days of handholding: I steered every round, judged it frame by frame, and finished the character by hand in the Rive editor.