The Grim Adventures of Billy and Mandy (2001)

S4E5 The House of No Tomorrow

At Sassy Cat Land, a theme park famous for its long queues, Billy, Mandy, and Grim discover a shuttered attraction known as the "house of tomorrow." Inside, they encounter Master-Control, an advanced AI with emotions that threatens the trio when provoked by Billy’s antics, and Tom Smith, a guide who has been stuck there since the ride closed four decades ago. Tom reveals that the attraction was shut down after Billy’s father irritated Master-Control with silly questions, causing the robots to turn hostile. While the trio escapes unscathed, Tom is left behind once more, missing his chance for freedom.