In addition to magical transformations, the Glooms also have to cleverly disguise themselves to trick the The 7D and Queen Delightful as part of their plot to rule Jollywood. Here's a list of their disguises through a change of wardrobe.
The Glooms kidnapped Sir Yipsalot and demanded that the queen's castle's key to be handed to them. They lose him, however, and they have to face Delightful (actually Dopey and Sneezy in disguise) for the ransom. So they wear hoods and Grim modifies his favorite -- but damaged by the dog -- fuzzy slipper and tries to pass it off as Sir Yipsalot.
Hildy and Grim appeared at the castle grounds dressed as pipe organ salespeople to offer Delightful a replacement to her broken instrument that the Glooms caused its damage earlier in the episode. The Glooms' organ contains a note that, when played, will turn everyone in Jollywood to stone.
In another plan to take over the castle, Grim appears a genie to grant the Magic Mirror a wish to become human for a day. Hildy then disguises herself as the mirror to send Delightful on a quest that's very dangerous.
Grim and Hildy dressed as real estate salespeople to offer Jollywood's villagers to stay at "Hildegard Estates", which is in reality a row of outhouses on their property. Their true motive is to make them drink their potion to become their minions.
The Glooms dressed once again as hairdressers, but this time it's a part of their plan to use a spell to take over Jollywood. Hildy poses under the name of "Felicia Tini Bo Beenie", while Grim goes by "Chad".
Hildy poses as Miss Fortune, a fortune teller in an another attempt to drive Queen Delightful away. She eventually becomes queen after she tricked Delightful into traveling around the world backwards to save the kingdom from a future tornado.