He's cruel, weak, frightened,impatient,vain, greedy and foolish man. He is violent and abusive with many, including his sister Daenerys. The years Viserys spend in exile were hard on him. He became obsessed with winning back the Seven Kingdoms. He became an angry and bitter man, and when he was forced to sell his mother's crown, the last joy had gone from him, leaving only rage. Viserys has been driven mad by his exile. He loved his mother and talking about dragons.