Kuromaku is one of the 8 clones living in Fedor's apartment. Kuromaku values accuracy and rationality of thinking the most. He is calm and serious, but quite easily irritated: at times he breaks down at the "inappropriate" behavior of other clones, in his opinion, most often at Varu. He prefers to express himself in scientific terms and calculate probabilities, is erudite, but is not a scientist. In ordinary life, Kuromaku wears a gray-brown jacket and trousers, a tie of a darker shade.