Kat Forbes

Katherine Amelia Rose "Kat" Forbes is one of the twin daughters of Mia Dominick and Andre Forbes, the other being Sophie Forbes. She was carried via surrogacy by her late adoptive maternal aunt and namesake, Kat Dominick. Her existence was revealed in Let It Go by Elodie Blackthorn, the twins' great-grandmother. However, in Blood Is The New Black, Elodie purposely poisons Mia with fey magic, believing that the twins were dead. In After School Special, it is revealed that the twins were transferred into Kat Dominick in order to save the future of the Lamia Enclave.