Personaliy and Appearance
Mason is a protective man whose patience has a very low threshold.
Mason divorced his wife Lee because of her addiction to painkillers and alcohol, and received full custody of their daughter Flora, agreeing to supervised visits between mother and daughter.  When Lee brings Flora to the Roanoke House to spend time together, Mason is not exactly enthusiastic.
When Flora disappears, Mason goes on a rampage and accuses Lee of being behind the mysterious kidnapping to escape with their daughter while police and neighbors are busy searching for the little girl in the woods. The situation worsens and Mason pushes Lee in a fit of rage. Early next morning, a charred body is discovered by the police hanging on a wheel attached to a tree. Lee recognizes the jewelry taken from the body as Mason's.
- Mason, Audrey, Shelby, Sidney and Matt are the only characters involved with the Roanoke incident that weren't killed by the forces brought from the paranormal entities of Roanoke.
- Mason Harris (angry): "How does an eight-year-old even know how to say that? 'Kill me last'?"