Disney's House of Mouse (2001)

S2E10 Super Goof

Title: Super Goof Plot: After munching on some tainted peanuts, Goofy transforms into a superhero called Super Goof. Surprisingly, no one recognizes him, even without a disguise or altered voice. With the club in imminent danger from a looming meteor, it's up to Goofy to step up and save the day, all while keeping his true identity under wraps.