Replicant

A replicant is a biological duplicate of a real person, and can be programmed to complete specific tasks.

The Paradan government once created a replicant of Miles O'Brien in an attempt to assassinate the leaders of the Parada rebels.

The replicant was programmed to think and act like the real O'Brien, even going so far as to believing he was the real O'Brien. It was believed to have a trigger inside that would cause the true programming to surface during peace talks between the government and the rebels. An informant in the government tipped the rebels off, and the replicant was killed.