Sean Baldwin is a mundane man who is the son of Jim Baldwin and his first wife, and adopted by Mary Baldwin. He is the brother of Karen Baldwin and step-brother of David Baldwin. He has dark almost black hair. He washed a love spring with the winged elf Willow accidentally. He had a pet dog named Woofer. He and his family helped save Xanth from overexposure of magic dust by containing Happy Bottom after being stranded there. They traveled with Nimby and Chlorine.
Sean returned to Xanth permanently with Willow and was given the talent to fly without wings.