Oswald
General
Oswald is an Aluvian assassin and secret mentor of Prince Borelean Strathelar.
Oswald arrived on Dereth after fleeing from Viamontian trackers who were hunting him down after his attempted assassination of King Varicci I of Viamont. Oswald arrived on the Halaetan Isles, where it would seem all the portals to Auberean that appear in Viamontian lands send you. Later, after the Varicci II took the Royal Army through the portals, Oswald was captured and held in the Viamontian Royal Prison. He easily escaped, which angered the Viamontian King greatly.
Oswald was able to freely pass through the Fiun Barrier which had kept Dereth and the Halaetan Islands divided. It is unknown how he was able to do this, however, this may explain why Oswald's hidden lair in the Fur Tree is on the coast closest to the Halaetans. On Dereth, Oswald was hired for many jobs. He killed Gertarh the Banderling who lived near Eastham. He was hired by Devana bint Hamudi to kill her father Hamud ibn Rafik who had turned into a Shadow. And most notably, Oswald killed the mayor of Ayan Baqur, Jaleh al-Thani, and attempted to assassinate High Queen Elysa Strathelar.
During The War of Blood and Shadow (the Grael arc) Oswald was made out to be less of a villain, when he became the mentor of Borelean Strathelar and helped the people of New Aluvia stand up against Varicci II. Later Oswald brought the Ordina Rossu Morta and Whispering Blade together to fight against Grael.