In Alice: Asylum Dr. Bumby will be represented as The Toymaker, rather than the Dollmaker as seen in Alice: Madness returns. His design will be much less sinister than we've seen before as Alice is unaware (consciously) of the evil the Toymaker represents. Her battle is not with him - but with herself. So he's able to occupy a neutral (?) place in the Asylum representation of Wonderland. Subtle clues will hint at the nature of this creature but to those who have not played the previous installments these may be overlooked.
The Toymaker will be running a doll/toy shop which Alice visits to acquire and upgrade her arsenal of toys-as-weapons, using the chaos coins as currency.