Main Characters Mateo 20 main appearances Izzie 20 main appearances Cooper 20 main appearances Logan 20 main appearances Mr. Oz 18 main appearances Night Hunter 17 main appearances Nightmare King 17 main appearances Albert 13 main appearances Susan 11 main appearances Mrs. Castillo 9 main appearances Snivel 9 main appearances Sneak 8 main appearances Coach Jeffries 8 main appearances Nova 7 main appearances José 6 main appearances Dallas 6 main appearances Jayden 5 main appearances Phil the Manticore 5 main appearances Ms. Putnam 4 main appearances Cooper's Mom 3 main appearances Inspector Strick 3 main appearances Lance 3 main appearances Mr. Hopper 2 main appearances Forgemaster 2 main appearances Masked Hero 1 main appearances News Stand Guy 1 main appearances Sinister Trophy 1 main appearances Nightmare Oz 1 main appearances Child 1 main appearances Jim 1 main appearances Speaker System 1 main appearances Radio Voice 1 main appearances Old Lady Hologram 1 main appearances Baby Strick 1 main appearances Cooper's Brother 1 main appearances Burrzerker 1 main appearances Delivery Boy 1 main appearances Grimspawn 1 main appearances Witch 1 main appearances Mr. Sandman 1 main appearances Max 1 main appearances Emil 1 main appearances Dallas's Friend 1 main appearances Guitarist 1 main appearances Excited Kid Peter 1 main appearances Construction Worker 1 main appearances