It is said that in the beginning Sethis was a Silvan Knight, and some rumours even say that she might be the missing sister of Feralia the Stag, champion of the Silvan Knights. Her heritage would justify Sethis' incredible archery skills. Sethis' transmutation from Thrall to Crawler was quick and violent, transforming her into the deadliest warriors in the Nagarots ranks.
Despite not being a Pureblood, she occupies a very good hierarchy position and work as Nargskerak's bodyguard.