Brone was a Vori soldier who was involved in attempting to indoctrinate Chakotay into the Vori army by instilling in him a fanatical hatred of the Kradin. To this end, the Vori used drugs and placed Chakotay in a controlled "simulation" to convince him that he had witnessed Kradin atrocities. In this simulation, Brone was the leader of a group of Vori soldiers trying to defend Vori civilians from the Kradin.
One indoctrination tactic that the Vori subjected Chakotay to was to make him believe that he had seen a Vori village attacked by the Kradin, who then committed atrocities against its inhabitants. Afterwards, Brone pretended to rescue Chakotay, in the process completing Chakotay's indoctrination.