Who is the Officer from the story, In the Penal Colony?

The officer was the technical assistant of the penal colony's previous Commandant, who was responsible for designing the execution machine— a "remarkable apparatus." Serving under the new Commandant, the officer continues to oversee the machine, but he also acts as the colony's judge, taking as his guiding principle the belief that "Guilt is never to be doubted." The officer tries to turn the presence of a foreign visitor to his own advantage, asking the explorer to make a public statement in defense of the execution machine. Much of the early part of the story is taken up with the officer's loving description of the machine's working parts. His devotion to this mechanical instrument of death is total.