The Snack Children
The Snack Children - or 'Snacklets' are 2 kids, their father is Mr. Snack, and their mother is Ms. Snack.
The bicolor cat is more prominent in the images, and is likely braver. The tabby stays near the entrance in images, and does not enter the chamber as quickly.
Besides this, not much is known about The Snack Children.
Appearance
The Snack children (AKA: Snacklets) are 2 domestic shorthairs. One of them (the more notable one in the pictures) is a bicolor ginger broken mackerel tabby and white cat, the other one appears to be a ginger tabby.