Dr. Warner is a surgeon and member of the medical staff of the SGC. He attempted to remove the Goa'uld symbiote from Kawalsky and the organic explosive device implanted in Cassandra, and he offered his assistance in preparing the protein marker to counteract Ma'chello's inventions that had invaded members of SG-1.
Portrayed by: Kevin McNulty
Cross Reference: Cassandra, Charles Kawalsky, Ma'chello's Inventions
Episode Reference: The Enemy Within, Singularity, Spirits, Legacy