Who is Pellinore Warthrop from The Monstrumologist and what is their importance?

Dr. Pellinore Xavier Warthrop is a monstrumologist, or one who studies and hunts monsters. Originally the employer of James Henry, Warthrop took Will Henry in after his parents perished in a fire. Warthrop is not a cruel man, but he is an elusive individual and one who shows Will little love. It is clear that he cares for Will and finds his services and his companionship necessary, but at the same time, Warthrop is not an emotional man, and thus he is unable to show Will any love or compassion.