House of Achromic better said - as the "Castle of Pure White," is described to be two 'stories' high and an Archive of information, shared across the Universe. The butler of the 'house' commonly takes care of the 'stored' books that are inside the "Grand Library," Butler themself are expressive as well as helpful 'mechanical doll' that assist their "Master. Alyx Jaren Brine" or better said - One of the Seven Principles; of whom created 'them' and the "House of Achromic," and mechanical dolls.