A new member of the Mysterio family is expected to debut in the WWE, with some reports suggesting it may be Rey Mysterio's daughter. However, there are also mentions of another family, the Anoa'i family, potentially having a new member sign with the WWE, introducing some uncertainty about which family is involved. The development comes amid various other reports and rumors surrounding the Mysterio family, including Rey Mysterio's potential retirement and his son Dominik's rising career.