Zorac

Zorac was a Time Lord and Lord Cardinal of the High Council. He was one of the High Councillors who sentenced the Fifth Doctor to death to stop Omega from taking over his body. (TV: Arc of Infinity)

Behind the scenes
In DWM 100, which gives a brief history of Gallifrey and the Time Lords, it is reported that Cardinal Zorac and Chancellor Thalia were the two High Council members sent to investigate events in the Death Zone by Borusa, where they both perished. A corpse wearing scarlet robes is found in the Death Zone by the Master, who recognises it as "one of my predecessors" (as Council investigator). (TV: The Five Doctors)