While Cubbi finally receives his chance to be knighted by Gummi royalty, the Gummies only have until sunset to rescue their human friend, as the castle only appears for one full day every hundred years.
- Corey Burton as Gruffi Gummi, Toadwart
- Brian Cummings as Artie Deco, Sir Gumlittle
- Jim Cummings as Sir Plucky
- David Faustino as Cavin
- June Foray as Grammi Gummi, Councilor Wooddale
- Katie Leigh as Sunni Gummi
- Lorenzo Music as Tummi Gummi
- Noelle North as Cubbi Gummi (uncredited)
- Alan Oppenheimer as Councilor Bearybaum
- Rob Paulsen as Gusto Gummi, Sir Blastus
- Will Ryan as Ogres, Mustachioed Knight of Gummadoon
- Michael Rye as Duke Igthorn
- Paul Winchell as Zummi Gummi
- Even though Cubbi plays a major role in the episode, his voice artist, Noelle North, goes uncredited.
- This episode marks Cavin's only appearance in the third season, and the only time that he is voiced by David Faustino.
- This episode reveals that Gummiberry Juice has the same effect on Ogres, that it has on humans; namely temporary super strength.
- Toadie and one of the big Ogres' colors briefly switch, as Cubbi and Cavin wake up from their artificially induced slumber. Toadie turns a darker green, and his shoulder-fur changes from green to orange, whereas the big Ogre (likely Zook) turns a lighter green, with darker green fur.
Home video releases