After a tragic riding accident, Arthur found himself one leg short. Fortunately he was not short of smarts, nor engineering degrees; so he crafted himself a fine mechanical limb to replace the one he lost that dreadful day. Soon his skills were much in demand, and he became one of the first pioneers of medical bioengineering.
His work proved pivotal in inspiring the innovations of The Bobbu, and so upon his death he was revivified entirely free of charge in order to continue his fine work. However, it turned out that Arthur considered one lifetime quite enough to dedicate to science, and has quickly become a great aficionado and patron of musical theatre!