Dook is an ordinary house ferret, if you overlook his grumpy demeanor and his dream to become a famous songwriter. He lived a life of peace and quiet (again, aside from the music) until the day he met Chessie. Since then, he's done his best to ignore her, hoping she'll eventually go away. It's not looking very likely.
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.