Named after the character Agnes Nutter from Good Omens.
Her adoptive littermates are called Bubble Bubble, Toil and Trouble because she's a witch and I'm a nerd
She can see the future. She wrote a book called The Nice and Accurate Prophecies of Agnes Nutter, Witch. This book ended and she wrote a sequel. Her ancestor, not wanting to have her life decided by centuries old prophecies, burned it. It's entirely possible however that Agnes saw this coming. Because she saw everything else coming. She was very good at seeing things coming.
Played by Josie Lawrence