|Portrayed By||Valerie Cruz|
|First Seen||Cause & Effect|
Kathy Sullivan is an agent with an unidentified Department of Defense agency who temporarily took over Don Wilson's role overseeing the operations of Dr. Lee Rosen's Group. She became the permanent liaison after Don Wilson was killed and turned into a recurring character.
Kathy Sullivan is in many ways the DoD counterpart to Lee Rosen, being equally adept at momentary truths and eliciting the desired response from others. She is highly conscientious and task-oriented, but doesn't appear to let her feelings cloud her judgment, when she has feelings. She certainly doesn't display any great regard for the team as people, only as a DoD asset.