Jerome is a Roamer who organizes dog-fights. He is also the leader of his group of Roamers and a thief.
The Lost Stories: The Roamers Jerome kidnaps Will's dog Ebony when his Roamer-group is in Redmont. He wants to train her for the (illegal) dogfights he organizes and asks the other Roamer Pentulengo to make Ebony a mean dog, but when this doesn't succeed, he tries to make her fight against one of their meanest dogs. When Will and Alyss intervene that dog gets angry and bites Jerome in the throat ending his life.