Sigma males

Homo sapiens sigmanesis, known commonly as Sigma males are an extinct species or subspecies of archaic humans who lived in Sarpedon until about 40,000 years ago. Many scientists have posited that they are distant relatives of the Kikpari. They were characterized by large, protruding jaws and were thought to be over seven feet tall.

Social behavior
Sigmanesis was known, unlike humans, to be a non-social creature, with most children leaving their mother as soon as able to walk. Accordingly, many young sigmanesis were killed by wild animals, though those that survived often had advanced survival and hunting skills. Accordingly, sigmanesis were never very populous or widespread, but were a persistent species characterized by strong, independent living.

Interaction with humans
The arrival of in Sarpedon caused significant habitat disruption for sigmanesis as widespread hunting by the more-populous homo sapiens disrupted the lone-survivor lifestyles of sigmanesis. Accordingly, many sigmanesis were very hostile to early humans as far as the archaeological record shows, as some sigmanesis remains - filled with damage of early crude weapons - have been found near the remains of early humans who were pummeled to death. Accordingly, most scientists believe that humans intentionally exterminated sigma males where possible. Some scholars believe that sigmanesis were also "breeded out" or that their offspring were adopted into human family groups in order to prevent their further spread.