Johnson Zenarchis had a body double that stayed near him while he worked in Pelvanida. Presumably he was there for added safety to the original.
When James Zanasiu, Wayne Anthony, and Zachary Johnson raided Oli Struth's lab, Wayne stumbled across the bodies of Brian Cass and his victim, apparently Johnson Zenarchis. (Darwin's Soldiers)
However, it was later revealed that this deceased person was a body double. (Survival of the Fittest)