A Dreadnought of the Lamenters Chapter, Chyron did not possess a nickname, but something he did have was a tremendously foul temper. Assigned to the Deathwatch before the loss of contact with the Lamenters after they encountered a Tyranid Hive Fleet, Chyron considered himself the last of the Lamenters. Due to the fate of his Chapter, his attachment to Talon was considered permanent. When Chyron objected to an order from Sigma to keep a Tyranid life-form that Talon had encountered alive, Sigma threatened the Dreadnought from expulsion from the Deathwatch, and since he had no Chapter to return to, Sigma commented that Chyron would be given to nothingness.