titles include Commander, Group Marshal, Field Major, and General. Agnomens include "the Undefeated", "the Bloodbringer", "the Avenger", and "the Slayer". Reproduction and gender identity The Sontarans are a monogender-asexual (a "male gender-only" species); they reproduce by means of cloning rather than sexual reproduction, and thus for the most part are extremely similar in appearance. Human characters in both The Sontaran Experiment and "The Sontaran Stratagem" comment on how closely individual Sontarans resemble one another; however, their height, skin tone, facial features, vocal timbre and accent, hair, spacing of teeth and even number of fingers have varied from story to story, and sometimes within stories. When Luke Rattigan asks how they can tell each other apart in "The Sontaran Stratagem", General Staal remarks that they say the same of humans. In The Time Warrior, Linx states that "at the Sontaran Military Academy we have hatchings of a million cadets at each muster parade." The Doctor also comments in The Invasion of Time that Sontarans can mass-clone themselves at rates up to a million embryos every four minutes. Thereafter the clones take just ten minutes to grow to adulthood. When the Sontaran reach adulthood, under the charge of the Sontaran High Command, each warrior is immediately given a rank and dispatched on a battle mission. From day one, the Sontarans are sent to battle. The audio The King of Sontar introduces a unique occasion where one Sontaran is the only result of a clone batch, the resulting Sontaran being essentially a million Sontarans in one, making him far taller than the average for his species and lacking a probic vent. Sontarans reproduce asexually and all the Sontarans depicted in the television series are of one gender; referred to with masculine pronouns, however it is not known if they possess distinctly male physiologies. General Staal comments that "words are the weapons of womenfolk" and that the clone of Martha Jones performed well "for a female" as commentary on the gender inequalities of other species. This typifies a Sontaran trait: interested only in the strongest fighters in any group or race. Despite this, Strax appeared perfectly comfortable with the prospect of wearing dresses in "The Battle of Demon's Run - Two Days Later"; he ultimately dressed in human gentleman's attire, nevertheless. In The Time Warrior, when Linx examines Sarah Jane, he comments on how the human reproduction system is 'inefficient' and that humans 'should