Aronholt was supposedly the inventor of the dream machine.
When the Seventh Doctor entered the world made by the machine, he encountered a construct of Aronholt which had been created by the original to ensure the machine's purpose was fulfilled. The Doctor later discovered that the machine was actually created by Irving Braxiatel, and that Aronholt never existed. The construct the Doctor met was based on Elliniko, the archaeology archivist for the Braxiatel Collection. (PROSE: Theatre of War)