Joanna Cargill was born to an abusive soldier father who favored his son and always lashed out at her for any reason. When the news of her brother's death reached her father, he lashed out at her more than ever and her powers activated. Without knowing it, she tried to defend herself by punching him, only for her fist to go straight through his chest, killing him. Joanna was afraid of what she was and what she had done, so she ran away.
Alliance of Evil
Joanna Cargill started off as a mercenary known as "Frenzy". During one mission, Frenzy came head-to-head with the mutant Gambit, and she developed a love-hate relationship with him.
After Joanna witnessed Magneto put in chains by humans; she was angered at all humans, and joined Apocalypse in the hopes of getting even with them. Apocalypse put her and three other individuals together to form the Alliance of Evil, and she stayed with the group and served in several missions, putting her up against the mutant group X-Factor on a few occasions.
Her first order from Apocalypse was to capture Rusty Collins and recruit him into their group. Her plan was foiled by X-Factor, and after a heated battle, she fled from feeling overwhelmed. Using a mutant with the ability to enhance others' powers, Frenzy's strength and durability made her a difficult foe for the superheroes, but she was eventually defeated after the death of her power-heightening accomplice. The Alliance of Evil were later defeated, and sent to prison by X-Factor.
Frenzy and the Alliance of Evil would eventually break free from prison, and would revolt against the Mutant Registration Act. Thanks to X-Factor, Frenzy and her teammates were once again defeated.
Krakoa
Frenzy was eventually welcomed to the new mutant island of Krakoa, created by Xavier, Magneto, and Moira X. She entered through the teleportation gateway alongside other villainous and fractious mutants, who had been invited to join the nation in order to heal mutantdom and start over as a whole species together.
Frenzy was next seen in The Green Lagoon, a tiki bar set up by Black Tom Cassidy.
S.W.O.R.D.
When Abigail Brand reformed the space program S.W.O.R.D., Frenzy joined them as Earth's mutant ambassador. She was seen fighting the Kree/Skrull Alliance ambassador Paibok before giving him a proper tour. She was also greeted by Krakoa Council member Magneto who was also given a tour by Brand, while she told Paibok that she had once worshiped him long ago.
Powers and Abilities
Frenzy is a Mutant who possesses a number of superhuman physical attributes as a result of genetic mutation:
Superhuman Strength: Frenzy is superhumanly strong and she possesses sufficient physical strength to lift at least 10 tons, and perhaps more, as she has been noted going toe-to-toe with such notably superhumanly strong beings such as She-Hulk.
Superhuman Speed: Frenzy can run and move at speeds that are beyond the natural physical limits of the finest human athlete. She is able to run at speeds around 100 km/h.
Superhuman Stamina: Frenzy's advanced musculature is much more efficient than that of an ordinary human. As a result, her muscles produce less fatigue toxins and those of a normal human. At her peak, she can exert herself physically for several hours before the build up of fatigue toxins in her blood begins to impair her.
Superhuman Durability: Frenzy's bodily tissues are much tougher and more resistant to physical injury than those of a normal human. Frenzy's skin has been described as "steel hard", rendering her impervious to high caliber bullets, bladed weapons composed of most conventional materials, and temperature extremes of both heat and cold. Frenzy is also capable of withstanding great impact forces, such as being repeatedly struck with superhuman force or falling from great heights, without being injured. She can also withstand powerful energy blasts, such as those of Cyclops, with no visible damage. She's also been shown to be resistant to radiation. Frenzy describes herself as having "steel-hard" skin.
Superhuman Agility: Frenzy's agility, balance and bodily coordination are enhanced to levels beyond the natural physical limits of the finest human athlete.
Superhuman Reflexes: Frenzy's reflexes are similarly enhanced and are superior to those of the finest human athlete.
She was stated to be a Level 6 Threat by Cable, while the O*N*E classified her as a General Threat.
Abilities
Frenzy is an exceptional hand to hand combatant. She prefers using street fighting techniques allowing her to make full use of her physical attributes.
Weaknesses
The only substance known to be able to penetrate her skin is adamantium, as seen when she fought X-23. Her eyes are also vulnerable to attacks by light, such as surgical lasers.
Paraphernalia
Transportation: X-Men Blackbird, formerly various vehicles provided by Apocalypse and Acolytes.
