[3] Shortly after the Avengers' and Fantastic Four's apparent deaths, the Crimson Cowl forms her own version of the Masters of Evil while working for Hydra to win New York City's crime families' favor which enrages the Thunderbolts led by Baron Helmut Zemo as a male Citizen V. When the Thunderbolts face the Masters of Evil in battle, the Crimson Cowl and her team escape when her teleportation ability creates a blinding flash in the first fight and she escapes for the second fight.
[4] After the Thunderbolts turn on Zemo and Techno which caused villains and heroes alike to hate, the Crimson Cowl attempts to induct the group into the Masters of Evil.
[11] Justine is later a recurring adversary to Iron Man, in which she has left behind her Crimson Cowl identity to lead Hammer Industries and is revealed to be Sasha's mother.
[12] Hammer continues as an adversary alongside the Mandarin in subsequent Iron Man storylines ("Demon", "The Long Way Down" and "The Future"), additionally antagonizing War Machine and Pepper Potts.
At Stark Tower, Hammer has Doctor Druid and Monica Rappaccini as her brokers and the board of directors initially found in her favor, resulting in a fight with Iron Man where Justine's demonic deal is revealed.
[17] Justine Hammer is an adept athlete, unarmed combatant, a shrewd businesswoman and negotiator, making her a formidable leader and criminal organizer.
Her Crimson Cowl cloak also contains devices enabling her to levitate and to teleport herself and her teammates away from the scene, with a brilliant, debilitating flash of light just prior to the effect.
In Ultimate Comics: Armor Wars, she suffered from a sickness from her enhancements as she assists Iron Man before it's revealed she actually working for Howard Stark Sr. which culminated in a technological disruption device that killed her.