For other uses of this name, see Johnson (disambiguation)
Scientist who traveled to the Pegasus Galaxy with the initial Atlantis expedition. She and Wagner investigated a research laboratory that contained at least one viral agent that broke containment when the city was hit by a hurricane. After twelve hours of exposure the hallucinatory virus killed both Johnson and Wagner.
Hot Zone - Johnson and Wagner investigate a damaged scientific laboratory in a flooded pier of Atlantis, and are the first to be exposed to a hallucinatory virus which soon kills them.