Another description yanked from LJ, because it's just easier for explaining the significance of Filch as the Hermit:
Filch is a perfect character to represent the Hermit. Quiet and almost lonesome solitude, watchng everything go by, everything as it happens through the years. Filch represents the negative associations of the card far more than the positive: suspiciousness or paranoia, fear, the iron curtain behind the eyes that won't let anyone in, loneliness and other such depressing and isolating things. So I drew him slouching in his office chair, petting his kitty, with a bottle of spirits sitting on his desk. Filch is a sad and lonely old rheumatic.
Yes. I love cats. Also, Mrs Norris is an agressive, loyal cat. My dad and I have a strong love for those types of cat. Plus she's smart. Also, the fact that she was played by a domestic long-haired housecat reminds me even more of the adorable kitty we have at home.
Another awesome and creative job.