Lucy Steel is the wife of Steven Steel, the organizer of the Steel Ball Run race. Lucy is a kind, intelligent, and gentle girl who is extremely loyal to her husband. Although she appears nervous and meek, Lucy is incredibly courageous, resourceful, and determined.

Spoiler

Lucy's involvement with the story truly begins when Funny Valentine is introduced. Lucy finds out that Funny Valentine plans to gather the bones of "The Saint" for his own needs and also kill Steven Steel. Lucy goes to great lengths to prevent this from happening.

Spoiler

Later on, Lucy teams up with Hot Pants to steal back the heart of Jesus's corpse from the president. Lucy disguises herself as the president's wife, but she is captured by Valentine, and is chosen by the corpse to be its user. This turns Lucy into an artificial Stand user that allows her to use its "holy field" ability that Valentine plans to use to become the leader of the world.