Stray Cat As Mike Killer Queen As Sully Hayato Kawajiri As Boo Infant Killer Queen/Baby Killer Queen As Boo's Monster Costume Smol Me As Robot Kid Everyone As Monsters Female Stray Cat/Rosette Kittens As Celia Mae Shinobu Kawajiri As Mr. Bile Kosaku Kawajiri/Yoshikage Kira As Mr. Waternoose

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