Fitness Fiend
When Dedede and Kirby gets fat from eating too much snacks, He hires a fitness instructor from N.M.E. to thin them out.
Aired 14/12/2002EP 61 - Fitness Fiend
2001
Kirby: Right Back at Ya!
A diminuitive pink creature orbiting in space called "Kirby" crash lands into Dream Land. Once getting acquainted with the citizens who live there in Cappy Town, he begins to defend the town from the monsters that King Dedede, the self-proclaimed ruler of Cappy Town, orders from the evil Nightmare Enterprises.
(Source: Anime News Network)