Little is known about Diane's life before or as the outbreak. All that is known is that Diane worked as a police officer in King County, Georgia, before the outbreak and likely worked alongside Rick Grimes, Shane Walsh, Leon Basset, and Lambert Kendal. She worked in dispatch along with a woman named Linda, and together the two women selected the flowers that Shane brought to Rick in the hospital before the outbreak occurred.
While Shane is giving flowers to an unconscious Rick, Shane mentions that the flowers were a gift from her and Linda.
When the outbreak began, Diane's fate is ultimately unknown. She was either assisting the U.S. Military with the infection, or fled to another location.
This list shows the victims Diane has killed:
- Possibly numerous counts of zombies