Rob,
No characters, though Disney essence is everywhere (shrubs shaped like Pooh and friends outside lodge, hidden mickey's, and the best CM's around IMHO). The resident "mascot" for HH is Shadow (a dog). You can find his footprints and doghouse around the grounds. And if you are very lucky, he may make an appearance during your trip.
It's awesome there and a truly wonderful place to vacation as a family!
Laura