Orland Fank is a servant of the Runestaff and the brother of the Warrior in Jet and Gold. He is a large man, with broad shoulders and red hair. He wields a large axe in battle. He has claimed that Jehamia Cohnahlias is his son (or himself, or both).
It is remotely possible, if he is the brother of the Warrior in Jet and Gold (and if the Warrior in Jet and Gold is the same being as the Knight in Black and Yellow), that Fank is one of the Nihrain, though this is mere speculation.