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Official Site: Marvel Comics

The Crimson Cowl (aka Justine Hammer), is a fictional character from the Marvel Comics universe. She was a recurring adversary of the Thunderbolts. Justine was the second villain to use the alias, Ultron being the first. Edwin Jarvis was framed as the first Crimson Cowl by Ultron. Dallas Riordan was framed as the second by Justine.

Justine claims to be the daughter of industrialist and super villain financier Justin Hammer. Despite being the daughter of one of the richest men in the world Justine's life was not one of privilege. Justin never approved of his daughter and Justine was always trying to prove her worthiness. Justine eventually decided to follow in her fathers footsteps and use the supervillain community to accumulate power for herself.

Shortly after the Avengers and the Fantastic Four seemingly died in battle with Onslaught, Justine donned the costume and name of the Crimson Cowl, an identity once used by Ultron, and like Ultron, she formed a new group of super villains called the Masters of Evil. Working for HYDRA, they hoped to win the favor of the New York crime families. All of this enraged the members of the new superhero team the Thunderbolts because they were actually another faction of the Masters of Evil led by Baron Zemo aka Citizen V. Helmut Zemo's father Heinrich was the original founder of the Masters of Evil and Helmut himself had once led the Masters in their siege on Avengers' mansion. As such the legacy of the Masters was important to Helmut and it angered him to see them now reduced to being hired mercenaries. When the Thunderbolts faced the Masters of Evil in battle she and her team escaped due to the blinding flash that accompanies the Crimson Cowl's teleportation effect. When next they fought Crimson Cowl escaped again.

After the Thunderbolts had turned on Zemo and Techno, they found themselves fugitives hated by heroes and villains alike. The Crimson Cowl saw this as an opportunity to induct the remaining Bolts into her Masters of Evil. She sent Cyclone to bait the Thunderbolts into walking into an ambush. After defeating the T-bolts she made her "proposal:" join her and enjoy all the amenities that come with being in her organization or defy her and she would tell all of the Thunderbolts enemies how to find them. The Thunderbolts were given time to think over the situation but in the end decided they would rather take down the Crimson Cowl instead. When next they fought, it looked like the Crimson Cowl had won until Hawkeye disguised as Dreadknight saved the team. Hawkeye offered to become the new Thunderbolts leader and one of his first actions as leader was to promise the media the capture of the Masters of Evil.

Crimson Cowl has not been a contender in any CBUB matches.