The Brak Show (2000)

S1E7 Expiration Day

Thundercleese discovers that his powers have been shut down by his creators, and things are looking dire with an asteroid on a collision course with Earth. Meanwhile, Dad and Brak set out on a mission to restore Thundercleese's abilities before it's too late to avert disaster. Their adventure culminates in an explosive showdown where they take out Zorak in spectacular fashion.