Connor "Mad" Rogan is a fictional character from the Demon Cycle series written by Peter V. Brett. He is known for his fierce personality and exceptional combat skills, often engaging in battles against supernatural threats. Rogan's character is complex, showcasing both strength and vulnerability throughout the series. In the story, Connor is a key figure in the fight against the corelings, which are monstrous creatures that emerge at night. His journey involves personal growth and the struggle to protect his loved ones while confronting the darkness that threatens their world.