H. W. Plainview

H.W. Plainview is the true protagonist of the 2007 epic drama film There Will Be Blood.

He was portrayed by Dillon Freasier (as a child) and Russell Harvard (as an adult).

Overview
As an adopted son of Daniel Plainview, he was called his "business partner". During an incident, he became deaf because of the loud explosion. He once tried to kill "Henry" because the "Henry" was an imposter. However, due to delusions from Daniel, he was sent to a deaf school in San Francisco. Near the end of the movie, H.W. denounced him as a delusional businessman.

Nobody know what happend to H.W., it is more likely that he had taken over the property once owned by Daniel.