- "Jeff, wait. How... am I supposed to find this Rick? I don't even know your last name. Where does he live, Jeff...? Jeff?"
- —Claudia asking Jeff about his brother.[src]
Much about Claudia's past is unknown, besides the fact she worked as a curator in Barcelona.
She was working as a curator when the apocalypse hit. Her assistant had turned and bitten a security guard at her work before she escaped with a suit of armor. She met Jeffrey Grimes and the two attempted to escape to America on a boat. She fell into the water attempting to kill a zombie, and Jeff saved her life before revealing he was bitten. He tells her to deliver a message to his brother, Rick, but dies before she could know anything more about him. It is currently unknown what happened to her since.
This list shows the victims Claudia has killed:
The two met in Barcelona after the Apocalypse. They seemed to have a good relationship, as they both saved each others lives. He also asks her to deliver a message to his brother Rick as a last wish.