|This article is about the Novel Series character. You may be looking for the Woodbury resident, or the Comic Series character.|
- "LYDIA, SWEETIE, I'M RIGHT HERE!! COME TO ME, SWEETIE!!"
- —Lilly to Lydia as a zombie approaches her.[src]
Lilly Caul on Lydia:
- "Nine-year-old Mary and Lydia are identical cherubs in matching peacoats and flaxen pigtails."
Nothing is know about Lydia's life prior to or as the outbreak began, except that she lived with her parents and three sisters.
While staying in Tent City, Lydia and her sisters were often babysat by Lilly. When an unknown car is heard in the distance, Lilly takes Mary and Lydia and brings them to the circus tent to hide with their mother and other sisters. The car is later revealed to be driven by Bob Stookey.
When Lilly is babysitting the girls a few days later, the camp is attacked by a small horde of zombies. The girls are attacked, and the circus tent collapses on top of them. When this happens, Lydia is trapped underneath. Walkers advance her but she is saved by Lilly. She is then brought to the car by Sarah, saving her. After Sarah is killed, zombies begin to close in on the car. To distract them, Lilly bangs on other nearby cars with a shovel, drawing the zombies towards her and away from the children.
It is unknown what happened to her after Tent City was destroyed by walkers and engulfed by flames. Lilly's group states that it is very unlikely that there were any survivors.