Origin
Patroklos is the son of the great Greek warrior Sophitia, and Rothion. He has a sister Pyrrha Alexandra who was abducted when she was only 3 tears of age, by the deranged and twisted Tira. On his quest to find his missing sister, he is manipulated by Elysium, and eventually does find her, but in malfested form.
Creation
Introduced alongside side his sister Pyrrha in the fifth installment of Soul Caliber franchise. Although the siblings existence was hinted at in earlier installments.