Agnar is a warrior in the trading section of Rellekka. He can be asked for his vote during The Fremennik Trials quest.
During The Fremennik Trials, when asked for his vote he will say that he will vote for you if you give him 100,000,000,000,000,000,900,470,093 coins. This is impossible as the maximum coins anyone can hold is 2,147,483,647. He can be found wandering around the market square.