Pepa Perez was a sex worker living in Barcelona, Spain until she was fatally wounded by two men the same night that Kay Cera was murdered. Sensing that her life force had left her body, Cuckoo transferred her mind into Pepa's body. Kay then sought the aid of her brother Albert to heal her wounds.
Using Pepa's body as her own new body, Kay Cera posed as her own daughter to have Cera's estate legally transferred to her new form.
Legally, Pepa Perez is considered missing.