Rizumu Tsukino, daughter of Cletus Kassidy aka Carnage and Frances Barrison aka Shriek, was born on a ward bedroom in St. Estes Home for Unwanted Children in Califamia, MoboMerica(Mobius for California, America) by the name, Grace Francisca.

The mobian half-Fox, half-otter hybrid lovechild was being taken away from the director of the orphanage as social services took the newborn (claimed to the infant that her parents died when the mother passed of complications from childbirth and the father died of grief when in reality: Cletus and Frances vowed with their never ending love that they will find a way to search for their child and became a family someday) to Sōkoyo where she got adopted by a Japanese wealthy mobian Fox couple, Kagayaki(businessman) and Heiwa(lawyer and housewife) Tsukino as they raised her with a gift of unconditional love and support as their own as she grew up mentally normal unlike her birth parents who are serial killers(based on the events of Venom: Let There Be Carnage(spoiler alert)).

She had lots of big dreams as a journalist, an engineering robotics scientist and a professional singer with a gift of a high pitch vocal sound but with song like her biological mother, Shriek.

By the time she was young at the age of five, she caught a high fever which could’ve ended up being her fate in death. Thankfully, the doctors found what they thought was a cure as the medication can also create another symbiotic mutation experiment(a female version), Frenzy.

She was scared at first by the time she was thirteen, Frenzy appeared to her body as she did her best controlling her newfound condition as she and Frenzy got along very well.

Frenzy is almost exactly like Venom: She enjoys fried chicken and chocolate candies, without craving for flesh on innocent citizens but only to bad guys including villains.

Since the day of the first day of high school, she met Shigeru Ōkido and Venom when he too had a life controlling Venom from his first lifestyle(losing a first girlfriend, got fired from his first career, events from the first Venom movie). She befriended Shigeru and they fell in love unconditionally throughout the school years while Frenzy and Venom vice versa.

As they had a lot in common with each other from the start, they inseparable and even her adopted parents saw him as her godsend as she became Shigeru’s current girlfriend(which explains her locket given from him).

Until one day, a mysterious caller from the Sōyoko State Prison was none other than Rizumu’s biological father, Cletus Kassidy as it changed her life forever!