Oscar and Hedgehog befriend a ghost who can't remember who he is.
Tropes:
- Bedsheet Ghost: Ghost doesn't become visible until Oscar accidentally throws a sheet over him.
- Creative Closing Credits: "Witches Lullaby" plays during the credits, indicating it's a "lore-building" episode.
- Shout-Out: The banjo-playing frog in the swamp is reminiscent of Kermit.
- Swamps Are Evil: The swamp where Ghost's family is in houses terrifying creatures.
- The Unreveal: While it's revealed that Ghost was Betsy's boyfriend and Susie is responsible for erasing Ghost's memory, we never learn Susie's motive for doing it and why she keeps it a secret from Betsy. It eventually gets revealed in the "Betsy and the Ghost" arc in season 6.
