However, nothing from the original species' body is left: a kett exalted from an angara, for example, only has traces of angaran genome remaining. One such trait is that kett can survive for limited periods in inhospitable environments without protective suits, including vacuum. Kett biology retains traits taken from many other species. Heleus Cluster species that have been subjected to exaltation include the challyrion, who become wraiths, and the angara, who become Chosen and Anointed. To build an army or replenish their numbers, kett simply capture members of other species and transform them through exaltation.
Kett mastery over genetic manipulation enabled them to develop a serum to rapidly convert other species into obedient kett, which became the basis for exaltation. The kett began adding beneficial genes from other species into their own genome in order to continually improve themselves, which they refer to as harmonization. It is speculated that exaltation arose long ago in kett history when their genetics reached a point of stagnation, leaving the species unable to breed through natural means. Kett possess no reproductive organs, and they reproduce only through an artificial process called exaltation.
Kett have very low-pitched voices, and those who have marginally higher voices are generally considered female. There are no visible distinctions between 'male' and 'female' kett of the same type.