A civil rights activist from 1964 New York with dissociative identity disorder, drawn into Mid-World through the second door. Her two identities - the composed Odetta Holmes and the volatile, dangerous Detta Walker - eventually integrate into the singular, formidable Susannah Dean. A wheelchair user who lost her legs below the knee in a subway accident, she becomes one of Roland's most skilled gunslingers. Her pregnancy and the demon child Mordred drive much of the final three books.