Goldar and Rito becoming Bulk & Skull's slaves made no sense.
Even though the show was always cheesy, Goldar started off as a serious villain (by the show's standards), he became progressively more goofy after Zedd's takeover, but Zeo takes the cake when he became a full-fledged goofy slapstick character.
But this scenario made no sense! Why would Goldar and Rito have to ask their permission? The were evil sorcerers bent on taking over the world who tried killing the Power Rangers. Why wouldn't they just kill Bulk and Skull, or at least force them to allow them to stay? And why would they have to do chores for them, as if they had the fear of being kicked out of the house - Goldar and Rito are gonna let themselves be kicked out by Bulk and Skull? Really?
Also, huge plot hole: Goldar already knew who Bulk and Skull were - he even personally mentions them in the "Green with Evil" series when he's about to kill them trapped inside the bus; he tells the rangers, "I believe these are friends of yours, you call them Bulk and Skull." Not to mention, since he can spy on the rangers in Angel Grove from Moon Palace, the countless times he saw them interacting with the rangers on numerous occasions. Yet here, they act like they're meeting for the first time. Very sloppy writing!
Make no provision for the flesh, to gratify its desires.