Dr. Angus Bumby was Alice Liddell's manipulative psychiatrist and the head of the Houndsditch Home for Wayward Youth in London. Bumby appeared to help Alice, along with the other orphans who lived there, to forget about traumatic events in their past using hypnotherapy. However, it was revealed that he had much darker motives and a greater role in Alice's past than she first realized.

The Dollmaker was the Wonderland incarnation of Dr. Angus Bumby. He was the mastermind behind the Infernal Train and Wonderland's corruption. Following his defeat and his real-world counterpart's death, Alice Liddell was once again able to save herself and her memories. The Dollmaker is the main antagonist (sharing this role with his counterpart Bumby)

His role will require strong yet medium masculine vocals. No range is set as of now, but there might be belting. Bumby is a main character, but only seen once in Act 1. He and the Dollmaker are seen more within Act 2, especially towards the end.
Feel free to study gameplay for his personality and speaking voice. 
As the Dollmaker, his voice requires distortion. If you want to incorporate that, go for it, otherwise, that will be edited on during the production.