Derangos

Though not mentioned in the High King's Sword books, Derangos is a huge part of Sebastion Blackthorn's past.  Derangos, a dwarven warrior who was struck with the wanderlust found himself with a bunch of mercenaries who took in a recruit named Sebastion Blackthorn.  The kid was scrawny, but worked hard and had a knack with the sword.  So Derangos mentored him, taking him under his wing until he would be good enough to fight on his own.

Derangos was there when Sebastion infamously killed the last High King (a story all of it's own) and spear headed the retreat for Sebastion and the rest of the mercenaries left after the suicidal charge.  Together, Derangos and Sebastion reshaped the mercenary band and together made Sebastion the most feared Mercenary Lord of all time.

Derangos was a normal looking dwarf, with dark hair, tanned skin, and covered in chain mail.  He wasn't a talker, wasn't extraordinarily handsome and didn't stand out in a crowd.  But he knew how to bring out the best in people.  Derangos died in the rescue attempt of Noshi and Shadizar from the Black Wizard Mathanos who had taken over the House Varanath.  Sebastion thinks of him now and again and Noshi had a small statue added to the hall of heroes in Varanath to honor him.

If your players are in the time of Sebastion's rise to infamy then they may come across Derangos in a tavern.  He is more then willing to talk and will not rise to any bait thrown at him.  Sebastion on the other hand may not care for his friend being harassed, however...