Seethlaw is a dwenda that Ringil encounters in Etterkal while on his quest to find his cousin Sherin. Seethlaw was responsible for building a path to Trelayne in order to establish Human allies and to weaken Human resistance for the dwenda's quest to reconquer Earth. Ringil is taken to The Ageless Realm where the two of them begin a sexual relationship, but Ringil ultimately turns against Seethlaw and kills him at Beksanara in Ennishmin.

Risgillen is his sister.