Katherine Valadyn "Rin" Sakaros, also called "Rin the Invincible" and a variety of other epithets and usually known mononymously as Rin, was a Sith witch, the illegitimate daughter of Sith Lord Tak Sakaros and fallen Jedi Ye`keb Millennium. Due to the unusual longevity of both her parents' species, Rin's physiological (and correspondingly mental) development was noticeably slowed; at age 6 she was still a toddler, and by age 23 she still had only the physique and temperament of a teenager. Though this was a constant source of irritation to her in the early decades of her life, it eventually became one of her greatest assets; her extensive natural life and the regenerative properties of Qua blood which she had inherited protected her from the bodily ravages other dark siders often endured.