Many of Eric Devlin’s nights are spent pouring over a sketchpad. His workroom is filled with flooding bookshelves, action figures standing guard and posters collected from various comic book conventions. A stereo fills the room with pounding rhythm as his pencil glides across paper—drawing life into the visual stories he loves to tell. Mr. Devlin’s love for comic books began at a young age. He immersed himself so deeply into the genre that he has trouble remembering what his first comic book was. “I am willing to bet it was a Spider-Man book though,” Mr. Devlin said. He recalls feeling…