Deanna Reynolds is highly intelligent and very friendly and approachable. She has a PhD in several areas of medicine and specializes in genetics. She is chief physician and administrator of The Grant Medical Center.

Deanna and Kimberly are best friends. Deanna treats the team's injuries and often acts as a counselor for them. She is well liked and the team thinks of her as a big sister. She feels guilty about the death of Johnny, Linda's brother.

She and Kimberly have a secret sub-basement under the medical center where they have a top secret lab. They have a secret mission that even the team is unaware of.