Cadden has owned two Human Replica Droids during his lifetime, both modeled to look, and behave, exactly like him. The first, Black one-eighteen, was ordered from a scientist, specializing in droid technologies. It is unknown why Cadden named this HRD this, possibly having something to do with a code, or maybe to represent a time of significant importance in Cadden's life. Either way, this HRD helped Cadden acheive several great things. Amongst these was the construction of Blackthorne Enterprises and the sacrificing his own life to save Cadden's.