In Dexter season 1, what kind of expert is Rudy Cooper?

In Dexter season 1, Rudy Cooper is presented as a prosthetics expert.

Rudy works with artificial limbs and becomes involved in the treatment of Tony Tucci, a victim connected to the Ice Truck Killer investigation. His professional knowledge of prosthetics helps establish his identity and brings him into contact with Debra Morgan, who begins a romantic relationship with him.

That occupation also supports the season’s larger mystery. Rudy’s expertise with artificial body parts parallels the Ice Truck Killer’s disturbing interest in dismemberment and reconstruction. The apparent career is part of the identity he uses while moving closer to Dexter’s family.

The major season-one revelation is that Rudy Cooper is actually Brian Moser, Dexter’s biological older brother and the Ice Truck Killer. Viewers sometimes call him a doctor or surgeon, but the quiz’s wording is best represented by “prosthetics expert,” the description used in the season’s synopsis.