The Empress decided to be Nicole Chopper, aka The Tin Woman. She loves the original story of The Wonderful Wizard of Oz, where the Tin Man used his axe to chop the heads of animals that threatened them on their journey.
The story continues after meeting The Wizard. Dorothy returned to her farm, and Nicole returned to her country to rule as Empress. Her subjects constructed a palace made of tin, from the architecture to the flowers in the garden.
According to the author, L Frank Baum, Nick Chopper had a flesh body but was later replaced with a metal one. Judith believes that she may have been flesh at one time but was replaced with a metal and TPE body to live longer.