Chessie is your typical grey squirrel...except not. An eternal optimist and cloudcuckoolander, she seems to follow her own set of rules. After meeting Dook, she spends most of her time annoying the ferret either through the window or inside the house.
Elizabeth is a mouse living in the walls of Dook's home. She doesn't socialize much with the animals on either side of The Window, and when she does, she can be very distant and soft-spoken...until she starts to sing. After hearing Dook's untrained voice, she decided to give him singing lessons so he wouldn't embarrass himself around her again.
Hazel is a timid, soft-spoken red squirrel that lives "across the pond". When nervous, she tries to hide herself behind her long, poofy tail. It's assumed that Chessie and Hazel are cousins, but the exact lineage is unclear.