Father– A part of David’s mind, the bitter and caustic reminder of what David could become.
Liza– Bubbly, caring and independent. The play follows her from their first meeting to the current, ruined version of their relationship.
Boy– He is the version of David that is more innocent and naïve but we see his spiral into current David.
Murphy– The psychiatrist who was assigned to David. Friendly and uncompromising.