Will Herondale is a fictional character from Cassandra Clare's series, The Infernal Devices. He is a Shadowhunter, a human with angelic blood, dedicated to fighting demons and protecting the mundane world. Will is known for his charming personality, quick wit, and a deep sense of loyalty to his friends. Will struggles with a curse that affects his ability to form close relationships, leading to a complex character arc. He is deeply connected to Tessa Gray and Jem Carstairs, his parabatai, and their friendship plays a crucial role in the story. Will's journey explores themes of love, sacrifice, and redemption.