Emperor Sun Hai, voiced by Armin Shimerman. He is the leader of the Empire. Sun Hai is credited for having saved the Empire from the "Long Drought", which completely crippled the Empire. In the years since, the Emperor has become more and more reclusive, while Death's Hand has begun appearing more often in public. When he is confronted by his daughter and the student in his palace, Sun Hai is furious at their attempt to challenge his authority. He then reveals that he is a ghost, and vows to destroy the student. He is killed by the student after an extensive battle in the palace throne room.
Source: Wikipedia, "Jade empire", available under the CC-BY-SA License.