Gravity Diet of Terror!
S3:E16
2005
IMDb
Mac and Harry, two criminals Manuela is pursuing, receive Asteroid GravityMan, and to get revenge on Manuela, they use him to shift gravity and make Manuela believe she is putting on weight. As a result, Manuela is overcome with the need to diet and exercise. However, Mac and Harry unintentionally appear in a submarine with the NetSavers during a virus examination, and they lose control of their NetNavi. Raika rejoins the cast at the end.