Who is Paolo Ortega from Death Masks and what is their importance?

Paolo Ortega is one of the novel's antagonists. He is a powerful vampire and a dominating member of the Red Court. Ortega is determined to take revenge on Harry for killing one of their members. Corrupt, manipulative, and a cheat, he challenges Harry to a duel that is never decided. In the end, Ortega is present in the South American villa that is destroyed..... his fate unknown.