Lord Oskatat is a somewhat elderly Murgo. He has the title Seneschal or more specifically, "Lord High Seneschal" and is second in command of Cthol Murgos (second only to King Urgit). He is described as a big man, "a heavy shouldered Murgo of late middle age" who is extremely competent. He has gray hair and a heavily-lined scarred grim face. He spoke in a rasping voice.
He has a very business-like demeanor but yet is very tactful; bowing to King Urgit's wishes. Oskatat and Lady Tamazin are married by the end of The Seeress of Kell. Oskatat is extremely firm with subordinates, especially when they challenged his authority. Oskatat has also protected Lady Tamazin's secret that Silk's father is the true biological father of Urgit.