Sheriff Harry S. Truman

Harry Truman runs Twin Peaks' sheriff's department with quiet, unglamorous decency. When Agent Cooper arrives to investigate Laura Palmer's murder, Truman becomes his local partner and grounding presence — steady, protective of his town and his friends, uneasy with anything he can't explain but willing to follow the evidence anyway.

Ontkean plays Truman as the show's ballast: a straight arrow surrounded by dreamlike strangeness who never becomes a joke for it. The writing trusts him with real feeling — grief, loyalty, a wary friendship with Cooper — and Ontkean underplays all of it, giving Twin Peaks a moral center that never curdles into stiffness.