It's a sleepover at the castle and Unikitty wants to stay up all night, believing something magical must happen if you stay up long enough. At first, the friends are game to stay up all night, but as they fall asleep one by one, Unikitty worries they won't make it! How far will she go to stay awake, and will she ever discover the secret reason people are supposed to go to bed when the Sandman shows up?
- Really Old Edith
- Dino Dude
- Ted Butter
- Pegasus Citizen
- Old Timey Mustache Man
- Crazy Chicken
- Cloud Dad
- Sleeping Bag Fish
- Hawkodile is shown blushing when Dr. Fox sleeps on his lap.
- According to "Top of the Naughty List", Brock can't sleep without a good-night kiss from Master Frown, which could explain why he wasn't asleep while the others were. [source][https://twitter.com/CareenIngle/status/1078174184281239552]
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