Who is Big Guy from Say You're One of Them and what is their importance?

Big Guy appears in the story, "Fattening for Gabon.". He is a human trafficker, who serves as the middleman between the kidnappers and the traffickers that will eventually sell the children for profit. He is described as a frighteningly violent man, who can be exceptually manipulative. In other words, he puts of a great false face.