Viellard was a veteran Zionite operative.
When the machines sucessfully captured Zion's RSI archive from the Zion mainframe, Viellard was one of the RSIs that were compromised and under threat. The Zionites attempted to evacuate him out of the Matrix to prevent him from being tracked and deleted by the machines. However, the Machines formed a cordon around the nearest hardline exit. Although Viellard was caught by the machine operative Darjarian and was killed by Starschwar.