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Official Site: Marvel

This article lists Marvel characters beginning with the letter "H", with brief descriptions introducing the characters.

Gabrielle Haller was a catatonic Holocaust survivor who awoke from the disorder after Charles Xavier used his powers to make her aware again. Gabby and Charles fell in love while he saw to her recovery for weeks, with the help of hospital volunteer and their mutual friend, Magnus (the future Magneto). When she is kidnapped by terrorist organization, HYDRA led by the Nazi Baron Strucker, Charles and Magnus used their mutant powers to save her and defeat HYDRA. Immediately afterwards, Magnus left Gabby and Charles feeling that her and Charles' view on mutants and humans contrasted his own. Magnus left with Nazi gold HYDRA wanted to claim.

Over some time, the two amicably ended their relationship. Soon after, Charles leaves Israel unaware that Gabrielle was pregnant. Years later, Gabrielle became the Israeli ambassador to Great Britain living in Paris with her young son David. During a terrorist attack at her home claiming the life of David's godfather Daniel Shomron, David's mutant powers activated, ending with him killing the terrorists and putting himself in a catatonic state. Later, David (who is now in his late teens) developed a disease the comic inaccurately describes as autism, which concerns his mother, who thinks it’s a symptom of something more serious. Gabrielle did everything she could, but she turned to Dr. Moira MacTaggert for help. She tells Moira that Xavier is David’s father and that she doesn’t want him involved. Unfortunately, David's powers began to manifest uncontrollably, absorbing the psyches of two of MacTaggert's friends, Tom Corsi and Sharon Friedlander. Moira had no choice but to call Xavier to help who is assisted by some of the New Mutants. When David absorbs Moira's and Wolfsbane's psyches into his mind, Xavier and Dani used their powers to enter it as well. It is here that Xavier discovers he's David's father. Gabrielle and Cypher are also absorbed and they all meet David's various personalities, including that of the absorbed psyche of the terrorist leader who raided his home. Eventually, Dani and David's personalities returned everybody to their bodies, fixing most of David's mind and ridding him of his disorder. Despite her secrecy, Xavier does his best to help raise David.

Later, Gabrielle becomes Magneto's attorney, who is on trial for crimes against humanity. The trial was halted when Baron Strucker's mutant twin children, collectively named Fenris, attacked the proceedings seeking revenge against her, Xavier and Magneto for their father's death. After Xavier and Magneto defeated them, Magneto did not return to the courtroom.

Hazmat has not been a contender in any CBUB matches.