The Pillow Case

Episode 13:The Pillow Case
This is the 13th episode (14th in the Japanese version)where King Dedede starts to sell suspicious-looking pillow cases from Holy Nightmare Inc. saying that the pillows will make everyone have good dreams. When everyone decides to buy them, they have dreams about things that went wrong when Kirby was around. Everyone continues having the bad memories about Kirby and starts thinking to kill Kirby. When Tiff finds out about the pillows, Metaknight collects all the pillows and destroys them, revieling the demon beast, Noddy. When all the Noddy have been revieled, they all run off not being seen until episode 16(episode 18 in the Japanese version)

Trivia
The other character that have not been seen sleeping was Torkori

The only characters not seen wanting to kill Kirby was Sword Knight and Blade Knight