Senator Stampingston is the main speaker in the Tribunal who reports on Dethklok's current activities. It's never made clear if he currently represents a state or if he simply was a past senator. He stands to left of the large television screen in the briefing room, explaining Dethklok's latest activities while the screen highlights his points. He has a diplomatic standpoint for the issues against Dethklok, often recommending espionage and other forms of information gathering. He keeps the most professional and calm attitude towards Dethklok; he knows they are a threat, but he never overreacts and he is rarely the one that comes up with ideas.
Whether he is a sitting senator or not, he appears to be involved in global politics in a role that is generally filled by a wide range of government officials (such as cabinet secretaries and ambassadors) appearing as a subject of some newspaper cutaways and addressing the United Nations with General Crozier. He is also seen in scenes with the President in the wings. He has a scar on the back of his neck.
It is revealed at the end of season 3 that he is one of the members of the Tribunal helping Mr. Salacia to reach his as of yet unknown goal.