In an alternate SGC in a parallel universe, Dr. Bennett was a scientist who was collaborating with Major Carter's experiment to extract small amounts of energy from thousands of different parallel universes. Their device would open an inter-universal bridge only for a microsecond, but at the precise moment that a bridge was opened to our reality, Colonel Carter was conducting an experiment of her own, and her lab was drawn into Major Carter's universe. The unexpected transfer of ordinary matter into an alternate reality caused a power spike, and the capacitors overloaded. Major Carter and Dr. Bennett were killed in the massive explosion that followed, and they instantly vanished as Colonel Carter appeared in their place.
Portrayed by: Robert Mann
Cross Reference: Alternate Reality - Universal Bridge
Episode Reference: The Road Not Taken