Who is Hezekiah Varner from The Monstrumologist and what is their importance?

Hezekiah Varner is the captain of the ship that brings the Anthropophagi to the United States for Alistair Warthrop. Varner is hired to travel to the Kingdom of Benin, where the king has a captive brood of the creature at his disposal. Alistair wanted the animals in order to breed them with humans, creating the perfect killing machine. Varner sailed the creatures, but unfortunately, the escaped from the hold, and slaughtered much of the crew. He was spared, only because he left the ship. When he was found and told his story, however, Alistair made sure he was deemed insane, and sent to the sanatorium, where Dr. Starr was well paid to make sure Varner was never released. Unfortunately, Dr. Starr is corrupt, and allowed Varner to become infested with maggots. He dies due to the infestation.