Dr. Allison Blake
Dr. Allison Blake started as a Department of Defense agent who acts as the liaison between Eureka and the Federal Government, and later becomes the director of Global Dynamics. She is also raising her two children; a son Kevin, an autistic youth, and Jenna, the daughter. While they have different fathers, both are now deceased. After the change in the timeline, Kevin is no longer autistic and she never became director of GD; she is instead head of medical science.
Carter: You did great.
Allison: My ass hurts.
Carter: I'll rub it later, you did great.
Grace: Did we have a launch scheduled?
Carter: So not good then.