Weiss was one of the intelligent holograms created by Hirogen engineer Donik to serve as prey for their holographic training simulations. He was modelled after a Human Starfleet officer. He was later liberated by Iden and became part of his rebellion.
Weiss was one of the more aggressive members of Iden's rebellion. (VOY: "Flesh and Blood")
The holographic Weiss may have been created from a template of Lieutenant Weiss, an officer stationed aboard USS Voyager, although this was never substantiated.
His name comes from the script.
External link Edit
Weiss (hologram) at Memory Beta, the wiki for licensed Star Trek works