Darryl is generally a friendly person, but his honesty is often seen as sarcastic by other people. He is deeply religious and tries to convert as many people as he can to believe in the Smiling God, including an attempt to convert the City Council.
He is not very good at conveying his thoughts and feelings in speech and prefers writing about them. Because of this, he is a very good writer, which is the origin of his nickname, Wordsmith. 
Darryl was born in Desert Bluffs and raised in the Joyous Congregation of the Smiling God by parents who traveled a lot and treated their church as a babysitter. As a child, Darryl found it difficult to pay attention to sermons and other religious aspects of his family's life, but later his best friend Stephanie explained the faith to him and convinced him to become a full member of the church. When he was in high school, his parents died in an accident and other members of the church helped him get through college.
Sometime later, Darry met Nilanjana Sikdar, whose scientific approach to life and skepticism towards religion, as well as his Pastor's plan to destroy Night Vale and the fact that he helped to kill the giant centipede his church believed to be a god, caused him to begin to doubt in his faith. Ultimately he decided to remain a member of the church, as he found he believes in its community.